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How to Check Windows PowerShell Version Installed on a Computer

In order to check Windows PowerShell version installed on a computer, users can check the value of $PSVersionTable built-in variable.
If you print $PSVersionTable variable value on a Windows PowerShell screen, you can see the installed version of Windows PowerShell.

Here is a Windows 7 screen view of a Windows PowerShell 2.0 is installed.

how to check installed PowerShell version

Another method is reading the RuntimeVersion or PowerShellVersion registry key value for installed Windows PowerShell version.
Open Windows 7 Registry Editor by typing and executing RegEdit in Run command. Then please check the PowerShellVersion registry key using the following path :
HKEY_LOCAL_MACHINE > Software > Microsoft > PowerShell > 1 > PowerShellEngine > PowerShellVersion

check PowerShell version using registry

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