Determine installed PowerShell version

powershell
MagicAndi picture MagicAndi · Dec 1, 2009 · Viewed 3M times · Source

How can I determine what version of PowerShell is installed on a computer, and indeed if it is installed at all?

Answer

user156862 picture user156862 · Dec 1, 2009

Use $PSVersionTable.PSVersion to determine the engine version. If the variable does not exist, it is safe to assume the engine is version 1.0.

Note that $Host.Version and (Get-Host).Version are not reliable - they reflect the version of the host only, not the engine. PowerGUI, PowerShellPLUS, etc. are all hosting applications, and they will set the host's version to reflect their product version — which is entirely correct, but not what you're looking for.

PS C:\> $PSVersionTable.PSVersion

Major  Minor  Build  Revision
-----  -----  -----  --------
4      0      -1     -1

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