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ConnectionOptions.Authority Property

Gets or sets the authority to be used to authenticate the specified user.

Namespace:  System.Management
Assembly:  System.Management (in System.Management.dll)

public string Authority { get; set; }

Property Value

Type: System.String
Returns a String that defines the authority used to authenticate the specified user.

The property must be passed as follows: If it begins with the string "Kerberos:", Kerberos authentication will be used and this property should contain a Kerberos principal name. For example,

Kerberos:<principal name>

If the property value begins with the string "NTLMDOMAIN:", NTLM authentication will be used and the property should contain a NTLM domain name. For example,

NTLMDOMAIN:<domain name>

If the property is null, NTLM authentication will be used and the NTLM domain of the current user will be used.

Property Value

If not null, this property can contain the name of the Windows NT/Windows 2000 domain in which to obtain the user to authenticate.

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

The following example connects to a remote computer and displays information about the operating system on the remote computer. A ConnectionOptions is created to connect to the remote computer with the desired connection options.

using System;
using System.Management;
public class RemoteConnect 
    public static void Main() 
        // Build an options object for the remote connection 
        // if you plan to connect to the remote 
        // computer with a different user name 
        // and password than the one you are currently using. 
        // This example uses the default values.  
        ConnectionOptions options = 
            new ConnectionOptions();
        options.Authority = "ntdlmdomain:DOMAIN";

        // Make a connection to a remote computer. 
        // Replace the "FullComputerName" section of the
        // string "\\\\FullComputerName\\root\\cimv2" with
        // the full computer name or IP address of the 
        // remote computer.
        ManagementScope scope = 
            new ManagementScope(
            "\\\\FullComputerName\\root\\cimv2", options);

        //Query system for Operating System information
        ObjectQuery query = new ObjectQuery(
            "SELECT * FROM Win32_OperatingSystem");
        ManagementObjectSearcher searcher = 
            new ManagementObjectSearcher(scope,query);

        ManagementObjectCollection queryCollection = searcher.Get();
        foreach ( ManagementObject m in queryCollection)
            // Display the remote computer information
            Console.WriteLine("Computer Name : {0}", 
            Console.WriteLine("Windows Directory : {0}", 
            Console.WriteLine("Operating System: {0}",  
            Console.WriteLine("Version: {0}", m["Version"]);
            Console.WriteLine("Manufacturer : {0}", 

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0