Bug: PowerShell update fails

[jeffreymcclain]

Issue Description

After opening a PowerShell file within VSCode, I get a notification saying "You have an old version of PowerShell (7.1.0). The current latest release is v7.1.1. Would you like to update the version? (This will close ALL pwsh terminals running in this Visual Studio Code session)." I click "Yes" and the notification says "Downloading PowerShell installer...", then after a few seconds the terminal reloads and the original notification appears stating "You have an old version of PowerShell (7.1.0)..." implying that the update failed.

For reference, I currently have PowerShell 7.1.0 installed with the VSCode PowerShell extension 2020.6.0 and VSCode installed machine wide (in the "C:\Program Files\Microsoft VS Code" directory).

Expected Behaviour

After clicking "Yes" to allow the update, it should update successfully.

Actual Behaviour

The download or installation fails after clicking "Yes", causing the update prompt to reappear.

[SydneyhSmith]

Thanks @jeffreymcclain could you please provide what version of Windows you are on? Do you also hit this issue if you do not have any terminals open besides VSCode? It would also be interesting to know if you download from the MSI with PowerShell terminals open if you also hit this issue? Thanks

[jeffreymcclain]

Sure, I'm using Windows 10, v20H2.

I did not have any other terminals open at the time I was trying to update within VSCode.

I did eventually just give up last week and downloaded the 64-bit MSI from the GitHub releases page, which worked fine.

I'm assuming the issue is specific to VSCode's built-in PowerShell updater.

[rileysea]

This is happening as well on MacOS 11.2.1 in VSCode.

PS > brew cask upgrade powershell
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 2 taps (homebrew/core and homebrew/cask).
==> Updated Formulae
Updated 33 formulae.
==> New Casks
curseforge                                                                                                              google-drive                                                                                                            lightform
==> Updated Casks
Updated 34 casks.

Error: Unknown command: cask

The instructions here appear to be correct https://docs.microsoft.com/en-us/powershell/scripting/install/installing-powershell-core-on-macos?view=powershell-7.1

The extension is not using the right syntax.

[jeffreymcclain]

For reference, this also happened with PowerShell update from 7.1.1 to 7.1.2