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Win32_OperatingSystem class

The Win32_OperatingSystem WMI class represents a Windows-based operating system installed on a computer. Any operating system that can be installed on a computer that can run a Windows-based operating system is a descendent or member of this class. Win32_OperatingSystem is a singleton class. To get the single instance, use "@" for the key.

Windows Server 2003, Windows XP, and Windows 2000:  If a computer has multiple operating systems installed, this class only returns an instance for the currently active operating system.

The following syntax is simplified from Managed Object Format (MOF) code and includes all of the inherited properties. Properties and methods are in alphabetic order, not MOF order.

Syntax

Copy 
class Win32_OperatingSystem : CIM_OperatingSystem
{
  string   BootDevice;
  string   BuildNumber;
  string   BuildType;
  string   Caption;
  string   CodeSet;
  string   CountryCode;
  string   CreationClassName;
  string   CSCreationClassName;
  string   CSDVersion;
  string   CSName;
  sint16   CurrentTimeZone;
  boolean  DataExecutionPrevention_Available;
  boolean  DataExecutionPrevention_32BitApplications;
  boolean  DataExecutionPrevention_Drivers;
  uint8    DataExecutionPrevention_SupportPolicy;
  boolean  Debug;
  string   Description;
  boolean  Distributed;
  uint32   EncryptionLevel;
  uint8    ForegroundApplicationBoost;
  uint64   FreePhysicalMemory;
  uint64   FreeSpaceInPagingFiles;
  uint64   FreeVirtualMemory;
  datetime InstallDate;
  uint32   LargeSystemCache;
  datetime LastBootUpTime;
  datetime LocalDateTime;
  string   Locale;
  string   Manufacturer;
  uint32   MaxNumberOfProcesses;
  uint64   MaxProcessMemorySize;
  string   MUILanguages[];
  string   Name;
  uint32   NumberOfLicensedUsers;
  uint32   NumberOfProcesses;
  uint32   NumberOfUsers;
  uint32   OperatingSystemSKU;
  string   Organization;
  string   OSArchitecture;
  uint32   OSLanguage;
  uint32   OSProductSuite;
  uint16   OSType;
  string   OtherTypeDescription;
  Boolean  PAEEnabled;
  string   PlusProductID;
  string   PlusVersionNumber;
  boolean  Primary;
  uint32   ProductType;
  string   RegisteredUser;
  string   SerialNumber;
  uint16   ServicePackMajorVersion;
  uint16   ServicePackMinorVersion;
  uint64   SizeStoredInPagingFiles;
  string   Status;
  uint32   SuiteMask;
  string   SystemDevice;
  string   SystemDirectory;
  string   SystemDrive;
  uint64   TotalSwapSpaceSize;
  uint64   TotalVirtualMemorySize;
  uint64   TotalVisibleMemorySize;
  string   Version;
  string   WindowsDirectory;
};

Members

The Win32_OperatingSystem class has the following types of members:

Methods

The Win32_OperatingSystem class has the following methods.

MethodDescription
Reboot

Shuts down and then restarts the computer system.

SetDateTime

Allows the computer date and time to be set.

Shutdown

Unloads programs and DLLs to the point where it is safe to turn off the computer.

Win32Shutdown

Provides the full set of shutdown options supported by Windows operating systems.

Win32ShutdownTracker

Provides the same set of shutdown options supported by the Win32Shutdown method in Win32_OperatingSystem, but also allows you to specify comments, a reason for shutdown, or a timeout.

Windows Server 2003, Windows XP, Windows 2000, and Windows NT 4.0:  This method is not available.

 

Properties

The Win32_OperatingSystem class has the following properties.

BootDevice
Data type: string
Access type: Read-only

Name of the disk drive from which the Windows operating system starts.

Example: "\\Device\Harddisk0"

BuildNumber
Data type: string
Access type: Read-only

Build number of an operating system. It can be used for more precise version information than product release version numbers.

Example: "1381"

BuildType
Data type: string
Access type: Read-only

Type of build used for an operating system.

Examples: ""retail build"", ""checked build""

Caption
Data type: string
Access type: Read-only

Short description of the object—a one-line string. The string includes the operating system version. For example, "Microsoft Windows XP Professional Version = 5.1.2500". This property can be localized.

CodeSet
Data type: string
Access type: Read-only
Qualifiers: MaxLen (6)

Code page value an operating system uses. A code page contains a character table that an operating system uses to translate strings for different languages. The American National Standards Institute (ANSI) lists values that represent defined code pages. If an operating system does not use an ANSI code page, this member is set to 0 (zero). The CodeSet string can use a maximum of six characters to define the code page value.

Example: "1255"

CountryCode
Data type: string
Access type: Read-only

Code for the country/region that an operating system uses. Values are based on international phone dialing prefixes—also referred to as IBM country/region codes. This property can use a maximum of six characters to define the country/region code value.

Example: "1" (United States)

CreationClassName
Data type: string
Access type: Read-only
Qualifiers: Key, MaxLen (256)

Name of the first concrete class that appears in the inheritance chain used in the creation of an instance. When used with other key properties of the class, this property allows all instances of this class and its subclasses to be identified uniquely.

CSCreationClassName
Data type: string
Access type: Read-only

Creation class name of the scoping computer system.

CSDVersion
Data type: string
Access type: Read-only

NULL-terminated string that indicates the latest service pack installed on a computer. If no service pack is installed, the string is NULL. For computers running on Windows 95, this property contains a null-terminated string that provides more information about the operating system.

Example: "Service Pack 3"

CSName
Data type: string
Access type: Read-only

Name of the scoping computer system.

CurrentTimeZone
Data type: sint16
Access type: Read-only

Number, in minutes, an operating system is offset from Greenwich mean time (GMT). The number is positive, negative, or zero.

DataExecutionPrevention_32BitApplications
Data type: boolean
Access type: Read-only

When the data execution prevention hardware feature is available, this property indicates that the feature is set to work for 32-bit applications if True. On 64-bit computers, the data execution prevention feature is configured in the Boot Configuration Data (BCD) store and the properties in Win32_OperatingSystem are set accordingly.

Windows Server 2003, Windows 2000, Windows NT 4.0, Windows XP, and Windows Me/98/95:  This property is not available.
DataExecutionPrevention_Available
Data type: boolean
Access type: Read-only

Data execution prevention is a hardware feature to prevent buffer overrun attacks by stopping the execution of code on data-type memory pages. If True, then this feature is available. On 64-bit computers, the data execution prevention feature is configured in the BCD store and the properties in Win32_OperatingSystem are set accordingly.

Windows Server 2003, Windows 2000, Windows NT 4.0, Windows XP, and Windows Me/98/95:  This property is not available.
DataExecutionPrevention_Drivers
Data type: boolean
Access type: Read-only

When the data execution prevention hardware feature is available, this property indicates that the feature is set to work for drivers if True. On 64-bit computers, the data execution prevention feature is configured in the BCD store and the properties in Win32_OperatingSystem are set accordingly.

Windows Server 2003, Windows 2000, Windows NT 4.0, Windows XP, and Windows Me/98/95:  This property is not available.
DataExecutionPrevention_SupportPolicy
Data type: uint8
Access type: Read-only

Indicates which Data Execution Prevention (DEP) setting is applied. The DEP setting specifies the extent to which DEP applies to 32-bit applications on the system. DEP is always applied to the Windows kernel.

Windows Server 2003, Windows 2000, Windows NT 4.0, Windows XP, and Windows Me/98/95:  This property is not available.

The following table lists the possible values.

ValueMeaning
Always Off
0

DEP is turned off for all 32-bit applications on the computer with no exceptions. This setting is not available for the user interface.

Always On
1

DEP is enabled for all 32-bit applications on the computer. This setting is not available for the user interface.

Opt In
2

DEP is enabled for a limited number of binaries, the kernel, and all Windows-based services. However, it is off by default for all 32-bit applications. A user or administrator must explicitly choose either the AlwaysOn or the OptOut setting before DEP can be applied to 32-bit applications.

Opt Out
3

DEP is enabled by default for all 32-bit applications. A user or administrator can explicitly remove support for a 32-bit application by adding the application to an exceptions list.

 

Debug
Data type: boolean
Access type: Read-only

Operating system is a checked (debug) build. If True, the debugging version of User.exe is installed. Checked builds provide error checking, argument verification, and system debugging code. Additional code in a checked binary generates a kernel debugger error message and breaks into the debugger. This helps immediately determine the cause and location of the error. Performance may be affected in a checked build due to the additional code that is executed.

Description
Data type: string
Access type: Read/write

Description of the Windows operating system. Some user interfaces for example, those that allow editing of this description, limit its length to 48 characters.

Distributed
Data type: boolean
Access type: Read-only

If True, the operating system is distributed across several computer system nodes. If so, these nodes should be grouped as a cluster.

EncryptionLevel
Data type: uint32
Access type: Read-only

Windows Server 2003 and Windows XP:  Encryption level for secure transactions: 40-bit, 128-bit, or n-bit.
ForegroundApplicationBoost
Data type: uint8
Access type: Read/write

Increase in priority is given to the foreground application. Application boost is implemented by giving an application more execution time slices (quantum lengths).

Windows Me/98/95:  Application boost is not available.
A ForegroundApplicationBoost value of 0 (zero) indicates the system boosts the quantum length by 6; if 1, then 12; and if 2 then 18. The default value is 2.
Windows NT 3.51 and earlier:  Application boost is implemented by increasing the scheduling priority. The scheduling priority is increased by the value of this property.
ValueMeaning
0

None

1

Minimum

2

(Default) Maximum

 

FreePhysicalMemory
Data type: uint64
Access type: Read-only

Number, in kilobytes, of physical memory currently unused and available.

For more information about using uint64 values in scripts, see Scripting in WMI.

FreeSpaceInPagingFiles
Data type: uint64
Access type: Read-only

Number, in kilobytes, that can be mapped into the operating system paging files without causing any other pages to be swapped out.

For more information about using uint64 values in scripts, see Scripting in WMI.

FreeVirtualMemory
Data type: uint64
Access type: Read-only

Number, in kilobytes, of virtual memory currently unused and available.

For more information about using uint64 values in scripts, see Scripting in WMI.

InstallDate
Data type: datetime
Access type: Read-only

Date object was installed. This property does not require a value to indicate that the object is installed.

LargeSystemCache
Data type: uint32
Access type: Read-only

Beginning with Windows Vista, this property is obsolete and not supported.

Windows Server 2003 and Windows XP:  Indicates whether to optimize memory for applications or system performance.
Windows 2000 and Windows NT 4.0 with SP4 and later:  This property is not available.
ValueMeaning
0

Optimize memory for applications.

1

Optimize memory for system performance.

 

LastBootUpTime
Data type: datetime
Access type: Read-only

Date and time the operating system was last restarted.

LocalDateTime
Data type: datetime
Access type: Read-only

Operating system version of the local date and time-of-day.

Locale
Data type: string
Access type: Read-only

Language identifier used by the operating system. A language identifier is a standard international numeric abbreviation for a country/region. Each language has a unique language identifier (LANGID), a 16-bit value that consists of a primary language identifier and a secondary language identifier.

Manufacturer
Data type: string
Access type: Read-only

Name of the operating system manufacturer. For Windows-based systems, this value is "Microsoft Corporation".

MaxNumberOfProcesses
Data type: uint32
Access type: Read-only

Maximum number of process contexts the operating system can support. The default value set by the provider is 4294967295 (0xFFFFFFFF). If there is no fixed maximum, the value should be 0 (zero). On systems that have a fixed maximum, this object can help diagnose failures that occur when the maximum is reached—if unknown, enter 4294967295 (0xFFFFFFFF).

MaxProcessMemorySize
Data type: uint64
Access type: Read-only

Maximum number, in kilobytes, of memory that can be allocated to a process. For operating systems with no virtual memory, typically this value is equal to the total amount of physical memory minus the memory used by the BIOS and the operating system. For some operating systems, this value may be infinity, in which case 0 (zero) should be entered. In other cases, this value could be a constant, for example, 2G or 4G.

For more information about using uint64 values in scripts, see Scripting in WMI.

MUILanguages
Data type: string array
Access type: Read-only

Multilingual User Interface Pack (MUI Pack ) languages installed on the computer. For example, "en-us". MUI Pack languages are resource files that can be installed on the English version of the operating system. When an MUI Pack is installed, you can can change the user interface language to one of 33 supported languages.

Name
Data type: string
Access type: Read-only

Operating system instance within a computer system.

NumberOfLicensedUsers
Data type: uint32
Access type: Read-only

Number of user licenses for the operating system. If unlimited, enter 0 (zero). If unknown, enter -1.

NumberOfProcesses
Data type: uint32
Access type: Read-only

Number of process contexts currently loaded or running on the operating system.

NumberOfUsers
Data type: uint32
Access type: Read-only

Number of user sessions for which the operating system is storing state information currently.

OperatingSystemSKU
Data type: uint32
Access type: Read-only

Stock Keeping Unit (SKU) number for the operating system.

Windows Server 2003, Windows XP, Windows 2000, and Windows NT 4.0:  This property is not available.

The following table lists possible SKU values.

ValueMeaning
0

Undefined

1

Ultimate Edition

2

Home Basic Edition

3

Home Premium Edition

4

Enterprise Edition

5

Home Basic N Edition

6

Business Edition

7

Standard Server Edition

8

Datacenter Server Edition

9

Small Business Server Edition

10

Enterprise Server Edition

11

Starter Edition

12

Datacenter Server Core Edition

13

Standard Server Core Edition

14

Enterprise Server Core Edition

15

Enterprise Server Edition for Itanium-Based Systems

16

Business N Edition

17

Web Server Edition

18

Cluster Server Edition

19

Home Server Edition

20

Storage Express Server Edition

21

Storage Standard Server Edition

22

Storage Workgroup Server Edition

23

Storage Enterprise Server Edition

24

Server For Small Business Edition

25

Small Business Server Premium Edition

 

Organization
Data type: string
Access type: Read-only

Company name for the registered user of the operating system.

Example: "Microsoft Corporation"

OSArchitecture
Data type: string
Access type: Read-only

Architecture of the operating system, as opposed to the processor.

Example: 32-bit

Windows Server 2003, Windows 2000, Windows NT 4.0, Windows XP, and Windows Me/98/95:  This property is not available.
OSLanguage
Data type: uint32
Access type: Read-only

Language version of the operating system installed. The following table lists the possible values. Example: 0x0807 (German, Switzerland).

ValueMeaning
1 (0x1)

Arabic

4 (0x4)

Chinese (Simplified)– China

9 (0x9)

English

1025 (0x401)

Arabic – Saudi Arabia

1026 (0x402)

Bulgarian

1027 (0x403)

Catalan

1028 (0x404)

Chinese (Traditional) – Taiwan

1029 (0x405)

Czech

1030 (0x406)

Danish

1031 (0x407)

German – Germany

1032 (0x408)

Greek

1033 (0x409)

English – United States

1034 (0x40A)

Spanish – Traditional Sort

1035 (0x40B)

Finnish

1036 (0x40C)

French – France

1037 (0x40D)

Hebrew

1038 (0x40E)

Hungarian

1039 (0x40F)

Icelandic

1040 (0x410)

Italian – Italy

1041 (0x411)

Japanese

1042 (0x412)

Korean

1043 (0x413)

Dutch – Netherlands

1044 (0x414)

Norwegian – Bokmal

1045 (0x415)

Polish

1046 (0x416)

Portuguese – Brazil

1047 (0x417)

Rhaeto-Romanic

1048 (0x418)

Romanian

1049 (0x419)

Russian

1050 (0x41A)

Croatian

1051 (0x41B)

Slovak

1052 (0x41C)

Albanian

1053 (0x41D)

Swedish

1054 (0x41E)

Thai

1055 (0x41F)

Turkish

1056 (0x420)

Urdu

1057 (0x421)

Indonesian

1058 (0x422)

Ukrainian

1059 (0x423)

Belarusian

1060 (0x424)

Slovenian

1061 (0x425)

Estonian

1062 (0x426)

Latvian

1063 (0x427)

Lithuanian

1065 (0x429)

Persian

1066 (0x42A)

Vietnamese

1069 (0x42D)

Basque (Basque) – Basque

1070 (0x42E)

Serbian

1071 (0x42F)

Macedonian (FYROM)

1072 (0x430)

Sutu

1073 (0x431)

Tsonga

1074 (0x432)

Tswana

1076 (0x434)

Xhosa

1077 (0x435)

Zulu

1078 (0x436)

Afrikaans

1080 (0x438)

Faeroese

1081 (0x439)

Hindi

1082 (0x43A)

Maltese

1084 (0x43C)

Scottish Gaelic (United Kingdom)

1085 (0x43D)

Yiddish

1086 (0x43E)

Malay – Malaysia

2049 (0x801)

Arabic – Iraq

2052 (0x804)

Chinese (Simplified) – PRC

2055 (0x807)

German – Switzerland

2057 (0x809)

English – United Kingdom

2058 (0x80A)

Spanish – Mexico

2060 (0x80C)

French – Belgium

2064 (0x810)

Italian – Switzerland

2067 (0x813)

Dutch – Belgium

2068 (0x814)

Norwegian – Nynorsk

2070 (0x816)

Portuguese – Portugal

2072 (0x818)

Romanian – Moldova

2073 (0x819)

Russian – Moldova

2074 (0x81A)

Serbian – Latin

2077 (0x81D)

Swedish – Finland

3073 (0xC01)

Arabic – Egypt

3076 (0xC04)

Chinese (Traditional) – Hong Kong SAR

3079 (0xC07)

German – Austria

3081 (0xC09)

English – Australia

3082 (0xC0A)

Spanish – International Sort

3084 (0xC0C)

French – Canada

3098 (0xC1A)

Serbian – Cyrillic

4097 (0x1001)

Arabic – Libya

4100 (0x1004)

Chinese (Simplified) – Singapore

4103 (0x1007)

German – Luxembourg

4105 (0x1009)

English – Canada

4106 (0x100A)

Spanish – Guatemala

4108 (0x100C)

French – Switzerland

5121 (0x1401)

Arabic – Algeria

5127 (0x1407)

German – Liechtenstein

5129 (0x1409)

English – New Zealand

5130 (0x140A)

Spanish – Costa Rica

5132 (0x140C)

French – Luxembourg

6145 (0x1801)

Arabic – Morocco

6153 (0x1809)

English – Ireland

6154 (0x180A)

Spanish – Panama

7169 (0x1C01)

Arabic – Tunisia

7177 (0x1C09)

English – South Africa

7178 (0x1C0A)

Spanish – Dominican Republic

8193 (0x2001)

Arabic – Oman

8201 (0x2009)

English – Jamaica

8202 (0x200A)

Spanish – Venezuela

9217 (0x2401)

Arabic – Yemen

9226 (0x240A)

Spanish – Colombia

10241 (0x2801)

Arabic – Syria

10249 (0x2809)

English – Belize

10250 (0x280A)

Spanish – Peru

11265 (0x2C01)

Arabic – Jordan

11273 (0x2C09)

English – Trinidad

11274 (0x2C0A)

Spanish – Argentina

12289 (0x3001)

Arabic – Lebanon

12298 (0x300A)

Spanish – Ecuador

13313 (0x3401)

Arabic – Kuwait

13322 (0x340A)

Spanish – Chile

14337 (0x3801)

Arabic – U.A.E.

14346 (0x380A)

Spanish – Uruguay

15361 (0x3C01)

Arabic – Bahrain

15370 (0x3C0A)

Spanish – Paraguay

16385 (0x4001)

Arabic – Qatar

16394 (0x400A)

Spanish – Bolivia

17418 (0x440A)

Spanish – El Salvador

18442 (0x480A)

Spanish – Honduras

19466 (0x4C0A)

Spanish – Nicaragua

20490 (0x500A)

Spanish – Puerto Rico

 

OSProductSuite
Data type: uint32
Access type: Read-only

Installed and licensed system product additions to the operating system. For example, the value of 146 (0x92) for OSProductSuite indicates Enterprise, Terminal Services, and Data Center (bits one, four, and seven set). The following table lists possible values.

ValueMeaning
1 (0x1)

Microsoft Small Business Server was once installed, but may have been upgraded to another version of Windows.

Windows Server 2003, Windows XP, and Windows 2000:  Small Business
2 (0x2)

Windows Server 2008 Enterprise, Windows Server 2003, Enterprise Edition, Windows 2000 Advanced Server, or Windows NT Server 4.0 Enterprise Edition is installed.

Windows Server 2003, Windows XP, and Windows 2000:  Enterprise
4 (0x4)

Windows BackOffice components are installed.

Windows Server 2003, Windows XP, and Windows 2000:  BackOffice
8 (0x8)

Communication Server is installed.

Windows Server 2003, Windows XP, and Windows 2000:  Communication Server
16 (0x10)

Terminal Services is installed.

Windows Server 2003, Windows XP, and Windows 2000:  Terminal Services
32 (0x20)

Microsoft Small Business Server is installed with the restrictive client license.

Windows Server 2003, Windows XP, and Windows 2000:  Small Business (Restricted)
64 (0x40)

Windows XP Embedded is installed.

Windows Server 2003 and Windows XP:  Embedded NT
128 (0x80)

Windows Server 2008 Datacenter, Windows Server 2003, Datacenter Edition, or Windows 2000 Datacenter Server is installed.

Windows Server 2003, Windows XP, and Windows 2000:  Data Center
256 (0x100)

Terminal Services is installed, but only one interactive session is supported.

Windows Server 2003, Windows XP, and Windows 2000:  This value is not available.
512 (0x200)

Windows XP Home Edition is installed.

Windows Server 2003, Windows XP, and Windows 2000:  This value is not available.
1024 (0x400)

Windows Server 2003, Web Edition is installed.

Windows Server 2003, Windows XP, and Windows 2000:  This value is not available.
8192 (0x2000)

Windows Storage Server 2003 R2 is installed.

Windows Server 2003, Windows XP, and Windows 2000:  This value is not available.
16384 (0x4000)

Windows Server 2003, Compute Cluster Edition is installed.

Windows Server 2003, Windows XP, and Windows 2000:  This value is not available.

 

OSType
Data type: uint16
Access type: Read-only

Type of operating system. The following list identifies the possible values.

ValuesMeaning
0 (0x0)

Unknown

1 (0x1)

Other

2 (0x2)

MACROS

3 (0x3)

ATTUNIX

4 (0x4)

DGUX

5 (0x5)

DECNT

6 (0x6)

Digital UNIX

7 (0x7)

OpenVMS

8 (0x8)

HPUX

9 (0x9)

AIX

10 (0xA)

MVS

11 (0xB)

OS400

12 (0xC)

OS/2

13 (0xD)

JavaVM

14 (0xE)

MSDOS

15 (0xF)

WIN3x

16 (0x10)

WIN95

17 (0x11)

WIN98

18 (0x12)

WINNT

19 (0x13)

WINCE

20 (0x14)

NCR3000

21 (0x15)

NetWare

22 (0x16)

OSF

23 (0x17)

DC/OS

24 (0x18)

Reliant UNIX

25 (0x19)

SCO UnixWare

26 (0x1A)

SCO OpenServer

27 (0x1B)

Sequent

28 (0x1C)

IRIX

29 (0x1D)

Solaris

30 (0x1E)

SunOS

31 (0x1F)

U6000

32 (0x20)

ASERIES

33 (0x21)

TandemNSK

34 (0x22)

TandemNT

35 (0x23)

BS2000

36 (0x24)

LINUX

37 (0x25)

Lynx

38 (0x26)

XENIX

39 (0x27)

VM/ESA

40 (0x28)

Interactive UNIX

41 (0x29)

BSDUNIX

42 (0x2A)

FreeBSD

43 (0x2B)

NetBSD

44 (0x2C)

GNU Hurd

45 (0x2D)

OS9

46 (0x2E)

MACH Kernel

47 (0x2F)

Inferno

48 (0x30)

QNX

49 (0x31)

EPOC

50 (0x32)

IxWorks

51 (0x33)

VxWorks

52 (0x34)

MiNT

53 (0x35)

BeOS

54 (0x36)

HP MPE

55 (0x37)

NextStep

56 (0x38)

PalmPilot

57 (0x39)

Rhapsody

 

OtherTypeDescription
Data type: string
Access type: Read-only

Additional description for the current operating system version.

Windows Server 2003 R2:  Contains the string "R2".
Windows Server 2003, Windows XP, Windows 2000, and Windows NT 4.0:  OtherTypeDescription is null.
PAEEnabled
Data type: Boolean
Access type: Read-only

If True, the physical address extensions (PAE) are enabled by the operating system running on Intel processors. PAE allows applications to address more than 4 GB of physical memory. When PAE is enabled, the operating system uses three-level linear address translation rather than two-level. Providing more physical memory to an application reduces the need to swap memory to the page file and increases performance. To enable, PAE, use the "/PAE" switch in the Boot.ini file. For more information about the Physical Address Extension feature, see http://go.microsoft.com/fwlink?LinkID=45912.

Windows XP, Windows 2000, and Windows NT 4.0 with SP4 and later:  The PAEEnabled property is not available.
PlusProductID
Data type: string
Access type: Read-only

Identification number for the Windows Plus! operating system enhancement software—if installed.

PlusVersionNumber
Data type: string
Access type: Read-only

Version number of the Windows Plus! operating system enhancement software—if installed.

Primary
Data type: boolean
Access type: Read-only

Specifies whether this is the primary operating system.

ProductType
Data type: uint32
Access type: Read-only

Additional system information.

ValueMeaning
1

Work Station

2

Domain Controller

3

Server

 

RegisteredUser
Data type: string
Access type: Read-only

Name of the registered user of the operating system.

Example: "Ben Smith"

SerialNumber
Data type: string
Access type: Read-only

Operating system product serial identification number.

Example: "10497-OEM-0031416-71674"

ServicePackMajorVersion
Data type: uint16
Access type: Read-only

Major version number of the service pack installed on the computer system. If no service pack has been installed, the value is 0 (zero).

Windows NT 4.0 and Windows Me/98/95:  This property is present but the value is NULL.
ServicePackMinorVersion
Data type: uint16
Access type: Read-only

Minor version number of the service pack installed on the computer system. If no service pack has been installed, the value is 0 (zero).

Windows NT 4.0 and Windows Me/98/95:  This property is present but the value is NULL.
SizeStoredInPagingFiles
Data type: uint64
Access type: Read-only

Total number of kilobytes that can be stored in the operating system paging files—0 (zero) indicates that there are no paging files. Be aware that this number does not represent the actual physical size of the paging file on disk.

For more information about using uint64 values in scripts, see Scripting in WMI.

Status
Data type: string
Access type: Read-only

Current status of the object. Various operational and nonoperational statuses can be defined. Operational statuses include: "OK", "Degraded", and "Pred Fail" (an element, such as a SMART-enabled hard disk drive may function properly, but predicts a failure in the near future). Nonoperational statuses include: "Error", "Starting", "Stopping", and "Service". The Service status applies to administrative work, such as mirror-resilvering of a disk, reload of a user permissions list, or other administrative work. Not all such work is online, but the managed element is neither "OK" nor in one of the other states.

The values are:

"OK"
"Error"
"Degraded"
"Unknown"
"Pred Fail"
"Starting"
"Stopping"
"Service"
SuiteMask
Data type: uint32
Access type: Read-only

Bit flags that identify the product suites available on the system.

Windows 2000 and Windows NT 4.0 with SP4 and later:   This property is not available.

For example, to specify both Personal and BackOffice, set SuiteMask to 4 | 512 or 516.

The following table lists possible values.

ValueMeaning
1

Small Business

2

Enterprise

4

BackOffice

8

Communications

16

Terminal

32

Small Business Restricted

64

Embedded NT

128

Data Center

256

Single User

512

Personal

1024

Blade

 

SystemDevice
Data type: string
Access type: Read-only

Physical disk partition on which the operating system is installed.

SystemDirectory
Data type: string
Access type: Read-only

System directory of the operating system.

Example: "C:\WINDOWS\SYSTEM32"

SystemDrive
Data type: string
Access type: Read-only

Letter of the disk drive on which the operating system resides. Example: "C:"

Windows 2000 and Windows NT 4.0 with SP4 and later:   This property is not available.
TotalSwapSpaceSize
Data type: uint64
Access type: Read-only

Total swap space in kilobytes. This value may be NULL (unspecified) if the swap space is not distinguished from page files. However, some operating systems distinguish these concepts. For example, in UNIX, whole processes can be swapped out when the free page list falls and remains below a specified amount.

For more information about using uint64 values in scripts, see Scripting in WMI.

TotalVirtualMemorySize
Data type: uint64
Access type: Read-only

Number, in kilobytes, of virtual memory. For example, this may be calculated by adding the amount of total RAM to the amount of paging space, that is, adding the amount of memory in or aggregated by the computer system to the property, SizeStoredInPagingFiles.

For more information about using uint64 values in scripts, see Scripting in WMI.

TotalVisibleMemorySize
Data type: uint64
Access type: Read-only

Total amount, in kilobytes, of physical memory available to the operating system. This value does not necessarily indicate the true amount of physical memory, but what is reported to the operating system as available to it.

For more information about using uint64 values in scripts, see Scripting in WMI.

Version
Data type: string
Access type: Read-only

Version number of the operating system.

Example: "4.0"

WindowsDirectory
Data type: string
Access type: Read-only

Windows directory of the operating system.

Example: "C:\WINDOWS"

Remarks

The Win32_OperatingSystem class is derived from CIM_OperatingSystem.

Examples

You can find an example script that obtains operating system and processor data from Win32_ComputerSystem, Win32_Processor, and Win32_OperatingSystem in the Win32_Processor topic examples. For other script examples, see WMI Tasks for Scripts and Applications and the TechNet ScriptCenter Script Repository.

For C++ code examples, see WMI C++ Application Examples.

The following script obtains the instances of Win32_OperatingSystem in the default root\cimv2 namespace, and then displays information about the operating system.

This script runs on Windows 2000 and Windows XP.

Copy 

On Error Resume Next 
' Connect to WMI and obtain instances of Win32_OperatingSystem
For Each objOS in GetObject( _
    "winmgmts:").InstancesOf ("Win32_OperatingSystem")

WScript.Echo "Name = " & objOS.Caption _
    & "Version = " & objOS.Version &VBCR _
    & "Registered User = " & objOS.RegisteredUser &VBCR _
    & "Manufacturer = " & objOS.Manufacturer      
Next

if Err <> 0 Then
    WScript.Echo Err.Description
    Err.Clear
End if

Requirements

Minimum supported client

Windows 2000 Professional

Minimum supported server

Windows 2000 Server

MOF
Cimwin32.mof

DLL
Cimwin32.dll

Namespace

\root\CIMV2

See also

Operating System Classes

 

 

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Build date: 9/7/2011

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Annotations FAQ
SystemDrive
The documentation indicate that the SystemDrive  property is not available --> Windows 2000 and Windows NT 4.0 with SP4 and later:   This property is not available. $0$0 $0 $0This property is still present and populated through Win7. Typo or just blind luck that it is still present?$0
History
LastBootUpTime
Why LastBootUpTime runs when computer is in Standby od Hybernation? When computer is one hour in standby, LastBootUpTime extend by one hour.
History
Caption property may contain trailing space

Please note that the Caption property may contain a trailing space on certain versions of Windows 7 and Vista.  Example:

C:\Windows\system32>wmic path win32_operatingsystem WHERE (Caption like "Microsoft Windows 7 Enterprise") get Caption
No Instance(s) Available.
 
C:\Windows\system32>wmic path win32_operatingsystem WHERE (Caption like "Microsoft Windows 7 Enterprise ") get Caption
Microsoft Windows 7 Enterprise 

If you use the Caption property in scripts or WMI filters, please trim the returned string (script) or use the LIKE query (WMI).

e.g. in a group policy WMI filter
If just wanting a result set  that returns all windows 7 independant of type
wmic path win32_operatingsystem WHERE (Caption like "%Windows 7%") get Caption
or takes account of the trailing space
wmic path win32_operatingsystem WHERE (Caption like "%Windows 7 Enterprise%") get Caption

History
OperatingSystemSKU for Hyper-V Server
As well as the missing SKU values mentioned by a previous commenter, the SKU for Hyper-V server is also missing:
42    0x0000002A    Hyper-V Server

This should also be included when writing queries to identify a Server Core variant.
History
Documentattion error
For the field Description , the documentation gives "Description of the Windows operating system"

Error : it is the description of the scoping computer

Is it possible to modify the documentation quickly ? So the people who want to use this interesting class  will not loose time ( and be angry against an incorrect documentation  )

Thanks beforehand
History
Creating a WMI filter in GPMC using MUILanguages

Hi,
I don't know where to post this so I'm trying here

I'm successfully deploying Windows 7 Ent with MUI languages.


I'd like to create a WMI filter based on the MUILanguages returned value but nothing works.

Here's the result of the PowerShell interrogation posted earlier of win32_operatingsystem :
MUILanguages : {ja-JP, en-US}

Here's my WMI filter :
Select * from Win32_OperatingSystem where Caption = "Microsoft Windows 7 Enterprise " and MUILanguages = "{ja-JP, en-US}"
But it keeps on saying in GPResult : Denied / Reason : False WMI filter

I've also tried :
Select * from Win32_OperatingSystem where Caption = "Microsoft Windows 7 Enterprise " and MUILanguages = "ja-JP, en-US"
Select * from Win32_OperatingSystem where Caption = "Microsoft Windows 7 Enterprise " and MUILanguages = "[ja-JP, en-US]"
Select * from Win32_OperatingSystem where Caption = "Microsoft Windows 7 Enterprise " and MUILanguages = "ja-JP, en-US"


BTW, there's a bug in GPMC 2008 and 2008 R2 :

GPMC in Windows 2008 R2 crashes each time you try to set a wrong sentence in WMI filter like :
Select * from Win32_OperatingSystem where Caption = "Microsoft Windows 7 Enterprise " and MUILanguages = {ja-JP, en-US}

GPMC in Windows 2003 says "a sintax error occured trying to evaluate a query string"

Thanks

My mail if you can help me : cgirardy@hotmail.fr


Edit : I haven't found any other solution but if I can create a WMI filter based on the OS and INSTALLED language, I'll accept it with pleasure.



[tfl - 09 02 10] Hi - and thanks for your post. You should post questions like this to the MSDN Forums at http://forums.microsoft.com/msdn or the MSDN Newsgroups at http://www.microsoft.com/communities/newsgroups/en-us/. You are much more likely get a quicker response using the forums than through the Community Content. For specific help about:
.NET Framework : http://groups.google.com/groups/dir?sel=usenet%3Dmicrosoft.public.dotnet.framework
PowerShell     : http://groups.google.com/group/microsoft.public.windows.powershell/topics?pli=1
SQL Server     : http://groups.google.com/groups/dir?sel=usenet%3Dmicrosoft.public.sqlserver%2C&
Visual Studio  : http://groups.google.com/groups/dir?sel=usenet%3Dmicrosoft.public.vstudio%2C&
Windows        : http://groups.google.com/groups/dir?sel=usenet%3Dmicrosoft.public.windows%2C&
All Public     : http://groups.google.com/groups/dir?sel=usenet%3Dmicrosoft.public%2C&
History
Change in Windows 7?
What happened to QuantumLength and QuantumType in Windows 7?
History
OperatingSystemSKU property help shows incomplete values.

OperatingSystemSKU property help shows incomplete values for server core editions, which leads to incomplete coding by many users who use msdn for reference,,,,

Present help shows values for only three flavours of server core.

But it should include totally six flavours of server core.

12 0x0000000C Windows Server 2008 Datacenter Edition, Server Core
39 0x00000027 Windows Server 2008 Datacenter Edition without Hyper-V, Server Core
13 0x0000000D Windows Server 2008 Standard Edition, Server Core
40 0x00000028 Windows Server 2008 Standard Edition without Hyper-V, Server Core
14 0x0000000E Windows Server 2008 Enterprise Edition, Server Core
41 0x00000029 Windows Server 2008 Enterprise Edition without Hyper-V, Server Core
29 0x0000001D Windows Web Server 2008, Server Core


Please immediately correct it..

-Santhosh Chikurambotla

History
Display Win32_OperatingSystem instance with PowerShell 
# Display-Win32_OperatingSystemInformation.ps1
# Obtains and displays Win32_operatingsystem instance on local computer
# Thomas Lee - tfl@psp.co.uk

# get instance
$os = get-wmiobject win32_operatingsystem

# output information:
"The class has {0} properties" -f $os.properties.count
"Details on this class:"
$os | format-list *

This script produces the following output which you could tidy up by doing more formatting in the sample!):
PSH [D:\foo]: .\Display-Win32_OperatingSystemInformation.ps1
The class has 61 properties
Details on this class:


Status                                    : OK
Name                                      : Microsoft Windows XP Professional|C:\WIN
                                            DOWS|\Device\Harddisk0\Partition1
FreePhysicalMemory                        : 1513560
FreeSpaceInPagingFiles                    : 1528176
FreeVirtualMemory                         : 2055660
__GENUS                                   : 2
__CLASS                                   : Win32_OperatingSystem
__SUPERCLASS                              : CIM_OperatingSystem
__DYNASTY                                 : CIM_ManagedSystemElement
__RELPATH                                 : Win32_OperatingSystem.Name="Microsoft Wi
                                            ndows XP Professional|C:\\WINDOWS|\\Devi
                                            ce\\Harddisk0\\Partition1"
__PROPERTY_COUNT                          : 61
__DERIVATION                              : {CIM_OperatingSystem, CIM_LogicalElement
                                            , CIM_ManagedSystemElement}
__SERVER                                  : GratefullyDead21
__NAMESPACE                               : root\cimv2
__PATH                                    : \\Dead420\root\cimv2:Win32_OperatingSyst
                                            em.Name="Microsoft Windows XP Profession
                                            al|C:\\WINDOWS|\\Device\\Harddisk0\\Part
                                            ition1"
BootDevice                                : \Device\HarddiskVolume2
BuildNumber                               : 2600
BuildType                                 : Multiprocessor Free
Caption                                   : Microsoft Windows XP Professional
CodeSet                                   : 1252
CountryCode                               : 1
CreationClassName                         : Win32_OperatingSystem
CSCreationClassName                       : Win32_ComputerSystem
CSDVersion                                : Service Pack 2
CSName                                    : Dead420
CurrentTimeZone                           : 60
DataExecutionPrevention_32BitApplications : True
DataExecutionPrevention_Available         : True
DataExecutionPrevention_Drivers           : True
DataExecutionPrevention_SupportPolicy     : 2
Debug                                     : False
Description                               : The end of the road
Distributed                               : False
EncryptionLevel                           : 168
ForegroundApplicationBoost                : 2
InstallDate                               : 20060926161344.000000+060
LargeSystemCache                          : 0
LastBootUpTime                            : 20080713011646.210625+060
LocalDateTime                             : 20080716122003.085000+060
Locale                                    : 0409
Manufacturer                              : Microsoft Corporation
MaxNumberOfProcesses                      : 4294967295
MaxProcessMemorySize                      : 2097024
NumberOfLicensedUsers                     : 
NumberOfProcesses                         : 98
NumberOfUsers                             : 2
Organization                              : 
OSLanguage                                : 1033
OSProductSuite                            : 
OSType                                    : 18
OtherTypeDescription                      : 
PlusProductID                             : 
PlusVersionNumber                         : 
Primary                                   : True
ProductType                               : 1
QuantumLength                             : 0
QuantumType                               : 0
RegisteredUser                            : TGR
SerialNumber                              : XXXXXXXXXXXXXXXXXXXX 
ServicePackMajorVersion                   : 2
ServicePackMinorVersion                   : 0
SizeStoredInPagingFiles                   : 3239532
SuiteMask                                 : 272
SystemDevice                              : \Device\HarddiskVolume2
SystemDirectory                           : C:\WINDOWS\system32
SystemDrive                               : C:
TotalSwapSpaceSize                        : 
TotalVirtualMemorySize                    : 2097024
TotalVisibleMemorySize                    : 3405872
Version                                   : 5.1.2600
WindowsDirectory                          : C:\WINDOWS
Scope                                     : System.Management.ManagementScope
Path                                      : \\Dead420\root\cimv2:Win32_OperatingSyst
                                            em.Name="Microsoft Windows XP Profession
                                            al|C:\\WINDOWS|\\Device\\Harddisk0\\Part
                                            ition1"
Options                                   : System.Management.ObjectGetOptions
ClassPath                                 : \\Dead420\root\cimv2:Win32_OperatingSyst
                                            em
Properties                                : {BootDevice, BuildNumber, BuildType, Cap
                                            tion, CodeSet, CountryCode, CreationClas
                                            sName, CSCreationClassName, CSDVersion, 
                                            CSName, CurrentTimeZone, DataExecutionPr
                                            evention_32BitApplications, DataExecutio
                                            nPrevention_Available, DataExecutionPrev
                                            ention_Drivers, DataExecutionPrevention_
                                            SupportPolicy, Debug, Description, Distr
                                            ibuted, EncryptionLevel, ForegroundAppli
                                            cationBoost, FreePhysicalMemory, FreeSpa
                                            ceInPagingFiles, FreeVirtualMemory, Inst
                                            allDate, LargeSystemCache, LastBootUpTim
                                            e, LocalDateTime, Locale, Manufacturer, 
                                            MaxNumberOfProcesses, MaxProcessMemorySi
                                            ze, Name, NumberOfLicensedUsers, NumberO
                                            fProcesses, NumberOfUsers, Organization,
                                             OSLanguage, OSProductSuite, OSType, Oth
                                            erTypeDescription, PlusProductID, PlusVe
                                            rsionNumber, Primary, ProductType, Quant
                                            umLength, QuantumType, RegisteredUser, S
                                            erialNumber, ServicePackMajorVersion, Se
                                            rvicePackMinorVersion, SizeStoredInPagin
                                            gFiles, Status, SuiteMask, SystemDevice,
                                             SystemDirectory, SystemDrive, TotalSwap
                                            SpaceSize, TotalVirtualMemorySize, Total
                                            VisibleMemorySize, Version, WindowsDirec
                                            tory}
SystemProperties                          : {__GENUS, __CLASS, __SUPERCLASS, __DYNAS
                                            TY, __RELPATH, __PROPERTY_COUNT, __DERIV
                                            ATION, __SERVER, __NAMESPACE, __PATH}
Qualifiers                                : {dynamic, Locale, provider, UUID}
Site                                      : 
Container                                 :
History
Bug in LocalDateTime?
There appears to be something wrong with how the LocalDateTime property is presented. Based on use of this property, I suspect it to be related to the DST change implemented in the fall of 2008. The spring shift to DST occurred on 03/08/2009 - and the value returned for this property is showing one hour earlier with the standard time offset. If I move my system clock forward one month to a date which was in DST under the previous rules, the value returned properly shows the actual hour and DST offset.
History
Shutdown windows using script and wmi in VBScript
Shutdown windows using script 
Sub ShutDown()
Dim Connection, WQL, SystemClass, System

'Get connection To local wmi
Set Connection = GetObject("winmgmts:root\cimv2")

'Get Win32_OperatingSystem objects - only one object In the collection
  WQL = "Select Name From Win32_OperatingSystem"
Set SystemClass = Connection.ExecQuery(WQL)

'Get one system object
'I think there is no way To get the object using URL?
For Each System In SystemClass
    System.Win32ShutDown (2)
Next
End Sub

History
mgmtclassgen and c#

If using C# with mgmtclassgen , do the following:

WMI.OperatingSystem os = new ROOT.CIMV2.win32.OperatingSystem();

Unline most of the other WMI classes generated by mgmtclassgen the OperatingSystem.CreateInstance() method will return a blank OperatingSystem object.

History