PowerTip: Start Your PowerShell 3.0 Script in PowerShell 2.0

Summary: Learn how to start your Windows PowerShell 3.0 script in Windows PowerShell 2.0 mode.

 I have a Windows PowerShell script I wrote several years ago. The script runs fine on a computer running Windows 7 with Windows PowerShell 2.0, but it does not work on my Windows 8 computer. I want to see if I can make the script work. What is the easiest thing to do?

 Start Windows PowerShell in version 2.0 mode. To do this, use the Run command and launch powershell -version 2. You can use the $psversionTable automatic variable to confirm you are now running in Windows PowerShell 2.0 (PowerShell will also be running in MTA apartment mode), as shown here.

PS C:\> $PSVersionTable

Name                           Value

----                           -----

CLRVersion                     2.0.50727.6400

BuildVersion                   6.1.7600.16385

PSVersion                      2.0

WSManStackVersion              2.0

PSCompatibleVersions           {1.0, 2.0}

SerializationVersion           1.1.0.1

PSRemotingProtocolVersion      2.1