PS7-packaged: WinRM / PowerShell Remoting broken under MSIX #27563

Summary

PowerShell Remoting (WinRM) does not function correctly when PowerShell 7 is installed as an MSIX package. The PS Remoting server plugin (pwrshplugin.dll) relies on file paths and ACLs that are incompatible with the MSIX packaging model.

Affected scenarios

• Enter-PSSession to a machine with MSIX-packaged PS7
• Invoke-Command targeting MSIX-packaged PS7 endpoints
• Any WinRM-based remote management workflow

Context

The root cause is related to the SYSTEM context gap (#27562) but is distinct — the WinRM plugin infrastructure has its own ACL and registration requirements that the per-user MSIX model does not satisfy.

We are working with the relevant Windows engineering teams on a resolution and have internal tracking for this work. We will update this issue as progress is made.

This is a blocker for the PS7 inboxing initiative.