Before you install Windows PowerShell, be sure that your system meets the minimum software requirements:
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Windows XP Service Pack 2, Windows 2003 Service Pack 1, or later
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Microsoft .NET Framework 2.0
If any version of Windows PowerShell is already installed on the computer, use Add or Remove Programs in Control Panel to uninstall existing versions before installing a new version.
Installing Windows PowerShell
Windows PowerShell 1.0 is available only through the Microsoft Download Center. Use the following link to the installation instructions on the Download Center.
http://go.microsoft.com/fwlink/?LinkId=79444
Installation Location
On 32-bit versions of Windows, Windows PowerShell is installed, by default, in the %SystemRoot%\System32\WindowsPowerShell\v1.0 directory.
On 64-bit versions of Windows, a 32-bit version of Windows PowerShell is installed in the %SystemRoot%\SystemWow64\WindowsPowerShell\v1.0 directory and a 64-bit version of Windows PowerShell is installed in the %SystemRoot%\System32\WindowsPowerShell\v1.0 directory.
Downloading the Windows PowerShell SDK
To get the reference assemblies needed for writing cmdlets, providers, and hosting application, as well as samples provided by Windows PowerShell™, download the Microsoft Windows Software Development Kit for Windows Vista and .NET Framework 3.0 Runtime Components from the following location.
http://go.microsoft.com/fwlink/?LinkId=79482
The Windows PowerShell™ SDK is part of the Microsoft Windows Software Development Kit for Windows Vista and .NET Framework 3.0 Runtime Components SDK. The following illustration shows which options to select to download only the Windows PowerShell™ reference assemblies and samples.
Be aware that the Windows PowerShell™ reference assemblies are downloaded onto disk (by default at C:\Program Files\Reference Assemblies\Microsoft\WindowsPowerShell\v1.0).They are not installed in the Global Assembly Cache (GAC).
See Also