vscode-powershell: Unable to load Az modules - Assembly with same name is already loaded

Prerequisites

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I have read the troubleshooting guide.
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Summary

If you load a PowerShell file that has references to Azure PowerShell commands the assemblies are being loaded without loading the module fully.

This is repeat of #3012 which was closed with no solution. Extensions do not matter in this case, it is when a file that has Azure module references is opened the assemblies get loaded but not the actual modules.

PowerShell Version

> $PSVersionTable

Name                           Value
----                           -----
PSVersion                      7.2.13
PSEdition                      Core
GitCommitId                    7.2.13
OS                             Darwin 21.6.0 Darwin Kernel Version 21.6.0: Thu Jul  6 22:20:00 PDT 2023; root:xnu-8020.240.18.702.13~1/RELEASE_A…
Platform                       Unix
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Visual Studio Code Version

> code-insiders --version 
1.82.0-insider
f1302be1e67e3af5fbeb8bbb2ea784de7bc96150
arm64

Extension Version

> code --list-extensions --show-versions | Select-String powershell

ms-vscode.powershell@2023.6.0

Steps to Reproduce

Close all PowerShell files
Restart session for PowerShell Extension
Run following command to list loaded assemblies

[System.AppDomain]::CurrentDomain.GetAssemblies() | Where-Object Location | Sort-Object -Property FullName | Select-Object -Property FullName, Location, GlobalAssemblyCache, IsFullyTrusted | Where FullName -like '*azure*' | ft

Note nothing is returned
Run Get-Module Az*
Nothing is returned
Open file (any file) with Az PowerShell references
Rerun step 3
All assemblies for the Az.Accounts and related commands are loaded
Rerun step 5
Nothing is returned
Run Import-Module Az.Accounts
Error returned: Import-Module: Assembly with same name is already loaded

Visuals

https://github.com/PowerShell/vscode-powershell/assets/11204251/113bb121-5cd8-482d-847b-184bb594cb84

Logs

ext_logs.zip

About this issue

Original URL
State: open
Created 10 months ago
Comments: 24 (9 by maintainers)

Most upvoted comments

This is kind of just a known issue with the Az suite of modules; they do not implement assembly isolation correctly across the board and so run into assembly conflicts in various configurations. These issues show up everywhere, but more often with the Extension Terminal because we have more dependencies loaded underneath to support the LSP server (and the way the assembly isolation works requires both parties to be doing it correctly, 100% of the time, we gave a whole talk on this at PSConfEU this summer). I would highly suggest just hiding the Extension Terminal and using normal pwsh instances in the VS Code terminal pane (click the + button and you can also set powershell.integratedConsole.startInBackground to hide the Extension Terminal at startup and just let it server its primary purpose in the background, which is powering the extension’s features by hosting an LSP server).

andyleejordan on Oct 13, 2023

Found a workaround. If I do a forced update of both the Az.Storage and Az.Accounts modules, I’m back to working.

tropez1971 on Nov 30, 2023

I’ll grab diagnostic logs for the windows device I used tomorrow and upload them.

wsmelton on Sep 6, 2023