PowerShell $PSVersionTable

Question

I have PowerShell 3.0 installed, and I wish to emulate v1.0

When I launch PowerShell 3.0 with -Version 1 $PSVersionTable reports:

Name Value
---- -----
CLRVersion 2.0.50727.5456
BuildVersion 6.1.7601.17514
PSVersion 2.0
WSManStackVersion 2.0
PSCompatibleVersions {1.0, 2.0}
SerializationVersion 1.1.0.1
PSRemotingProtocolVersion 2.1

If I use the -Version 2 parameter I get the same result
If I use the -Version 3 parameter I get version 3.

Question, why can't I emulate version 1?

Answer 1

Looking at this answer, I don't think you can run 1 & 2 side-by-side without some surgery on the GAC (so it would follow that 1, 2 & 3 don't all co-exist either - only 2 & 3, because 2 & 3 were designed to run side by side). Version 2 was meant to completely replace version 1, AFAICT.

Answer 2

You can not run V1 using the side by side stuff. That was never supported. You CAN run V2 from V3, but not V1.