Importing Az Module after Integrated Console has loaded any of the Az* modules will results in no exported commands for said module

[APStrickland]

System Details

System Details Output

### VSCode version: 1.42.1 c47d83b293181d9be64f27ff093689e8e7aed054 x64

### VSCode extensions:
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docsmsft.docs-metadata@1.0.4
docsmsft.docs-preview@0.3.40
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tomoki1207.pdf@0.5.1
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### PSES version: 2.0.0.0

### PowerShell version:

Name                           Value
----                           -----
PSVersion                      7.0.0
PSEdition                      Core
GitCommitId                    7.0.0
OS                             Microsoft Windows 10.0.18363
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Issue Description

If a PS1 file is opened that contains an Az module reference and then Import-Module Az is called, the Az cmdlets in the PS1 file will no longer work.

Expected Behaviour

When importing the Az Module, all Az cmdlets should work

PS C:\temp\Bug> Import-Module -Name Az
PS C:\temp\Bug> Get-Command -Module Az.Storage

CommandType     Name                                               Version    Source    
-----------     ----                                               -------    ------    
Alias           Disable-AzStorageSoftDelete                        1.9.0      Az.Storage
Alias           Enable-AzStorageSoftDelete                         1.9.0      Az.Storage
Alias           Get-AzStorageContainerAcl                          1.9.0      Az.Storage
Alias           Start-CopyAzureStorageBlob                         1.9.0      Az.Storage
Alias           Stop-CopyAzureStorageBlob                          1.9.0      Az.Storage
Cmdlet          Add-AzRmStorageContainerLegalHold                  1.9.0      Az.Storage
Cmdlet          Add-AzStorageAccountManagementPolicyAction         1.9.0      Az.Storage
Cmdlet          Add-AzStorageAccountNetworkRule                    1.9.0      Az.Storage
Cmdlet          Close-AzStorageFileHandle                          1.9.0      Az.Storage
Cmdlet          Disable-AzStorageBlobDeleteRetentionPolicy         1.9.0      Az.Storage
Cmdlet          Disable-AzStorageDeleteRetentionPolicy             1.9.0      Az.Storage
Cmdlet          Disable-AzStorageStaticWebsite                     1.9.0      Az.Storage
Cmdlet          Enable-AzStorageBlobDeleteRetentionPolicy          1.9.0      Az.Storage
Cmdlet          Enable-AzStorageDeleteRetentionPolicy              1.9.0      Az.Storage
Cmdlet          Enable-AzStorageStaticWebsite                      1.9.0      Az.Storage
Cmdlet          Get-AzRmStorageContainer                           1.9.0      Az.Storage
Cmdlet          Get-AzRmStorageContainerImmutabilityPolicy         1.9.0      Az.Storage
Cmdlet          Get-AzRmStorageShare                               1.9.0      Az.Storage
Cmdlet          Get-AzStorageAccount                               1.9.0      Az.Storage
Cmdlet          Get-AzStorageAccountKey                            1.9.0      Az.Storage
Cmdlet          Get-AzStorageAccountManagementPolicy               1.9.0      Az.Storage
Cmdlet          Get-AzStorageAccountNameAvailability               1.9.0      Az.Storage
Cmdlet          Get-AzStorageAccountNetworkRuleSet                 1.9.0      Az.Storage
Cmdlet          Get-AzStorageBlob                                  1.9.0      Az.Storage
Cmdlet          Get-AzStorageBlobContent                           1.9.0      Az.Storage
Cmdlet          Get-AzStorageBlobCopyState                         1.9.0      Az.Storage
Cmdlet          Get-AzStorageBlobServiceProperty                   1.9.0      Az.Storage
Cmdlet          Get-AzStorageContainer                             1.9.0      Az.Storage
Cmdlet          Get-AzStorageContainerStoredAccessPolicy           1.9.0      Az.Storage
Cmdlet          Get-AzStorageCORSRule                              1.9.0      Az.Storage
Cmdlet          Get-AzStorageFile                                  1.9.0      Az.Storage
Cmdlet          Get-AzStorageFileContent                           1.9.0      Az.Storage
Cmdlet          Get-AzStorageFileCopyState                         1.9.0      Az.Storage
Cmdlet          Get-AzStorageFileHandle                            1.9.0      Az.Storage
Cmdlet          Get-AzStorageQueue                                 1.9.0      Az.Storage
Cmdlet          Get-AzStorageQueueStoredAccessPolicy               1.9.0      Az.Storage
Cmdlet          Get-AzStorageServiceLoggingProperty                1.9.0      Az.Storage
Cmdlet          Get-AzStorageServiceMetricsProperty                1.9.0      Az.Storage
Cmdlet          Get-AzStorageServiceProperty                       1.9.0      Az.Storage
Cmdlet          Get-AzStorageShare                                 1.9.0      Az.Storage
Cmdlet          Get-AzStorageShareStoredAccessPolicy               1.9.0      Az.Storage
Cmdlet          Get-AzStorageTable                                 1.9.0      Az.Storage
Cmdlet          Get-AzStorageTableStoredAccessPolicy               1.9.0      Az.Storage
Cmdlet          Get-AzStorageUsage                                 1.9.0      Az.Storage
Cmdlet          Lock-AzRmStorageContainerImmutabilityPolicy        1.9.0      Az.Storage
Cmdlet          New-AzRmStorageContainer                           1.9.0      Az.Storage
Cmdlet          New-AzRmStorageShare                               1.9.0      Az.Storage
Cmdlet          New-AzStorageAccount                               1.9.0      Az.Storage
Cmdlet          New-AzStorageAccountKey                            1.9.0      Az.Storage
Cmdlet          New-AzStorageAccountManagementPolicyFilter         1.9.0      Az.Storage
Cmdlet          New-AzStorageAccountManagementPolicyRule           1.9.0      Az.Storage
Cmdlet          New-AzStorageAccountSASToken                       1.9.0      Az.Storage
Cmdlet          New-AzStorageBlobSASToken                          1.9.0      Az.Storage
Cmdlet          New-AzStorageContainer                             1.9.0      Az.Storage
Cmdlet          New-AzStorageContainerSASToken                     1.9.0      Az.Storage
Cmdlet          New-AzStorageContainerStoredAccessPolicy           1.9.0      Az.Storage
Cmdlet          New-AzStorageContext                               1.9.0      Az.Storage
Cmdlet          New-AzStorageDirectory                             1.9.0      Az.Storage
Cmdlet          New-AzStorageFileSASToken                          1.9.0      Az.Storage
Cmdlet          New-AzStorageQueue                                 1.9.0      Az.Storage
Cmdlet          New-AzStorageQueueSASToken                         1.9.0      Az.Storage
Cmdlet          New-AzStorageQueueStoredAccessPolicy               1.9.0      Az.Storage
Cmdlet          New-AzStorageShare                                 1.9.0      Az.Storage
Cmdlet          New-AzStorageShareSASToken                         1.9.0      Az.Storage
Cmdlet          New-AzStorageShareStoredAccessPolicy               1.9.0      Az.Storage
Cmdlet          New-AzStorageTable                                 1.9.0      Az.Storage
Cmdlet          New-AzStorageTableSASToken                         1.9.0      Az.Storage
Cmdlet          New-AzStorageTableStoredAccessPolicy               1.9.0      Az.Storage
Cmdlet          Remove-AzRmStorageContainer                        1.9.0      Az.Storage
Cmdlet          Remove-AzRmStorageContainerImmutabilityPolicy      1.9.0      Az.Storage
Cmdlet          Remove-AzRmStorageContainerLegalHold               1.9.0      Az.Storage
Cmdlet          Remove-AzRmStorageShare                            1.9.0      Az.Storage
Cmdlet          Remove-AzStorageAccount                            1.9.0      Az.Storage
Cmdlet          Remove-AzStorageAccountManagementPolicy            1.9.0      Az.Storage
Cmdlet          Remove-AzStorageAccountNetworkRule                 1.9.0      Az.Storage
Cmdlet          Remove-AzStorageBlob                               1.9.0      Az.Storage
Cmdlet          Remove-AzStorageContainer                          1.9.0      Az.Storage
Cmdlet          Remove-AzStorageContainerStoredAccessPolicy        1.9.0      Az.Storage
Cmdlet          Remove-AzStorageCORSRule                           1.9.0      Az.Storage
Cmdlet          Remove-AzStorageDirectory                          1.9.0      Az.Storage
Cmdlet          Remove-AzStorageFile                               1.9.0      Az.Storage
Cmdlet          Remove-AzStorageQueue                              1.9.0      Az.Storage
Cmdlet          Remove-AzStorageQueueStoredAccessPolicy            1.9.0      Az.Storage
Cmdlet          Remove-AzStorageShare                              1.9.0      Az.Storage
Cmdlet          Remove-AzStorageShareStoredAccessPolicy            1.9.0      Az.Storage
Cmdlet          Remove-AzStorageTable                              1.9.0      Az.Storage
Cmdlet          Remove-AzStorageTableStoredAccessPolicy            1.9.0      Az.Storage
Cmdlet          Set-AzCurrentStorageAccount                        1.9.0      Az.Storage
Cmdlet          Set-AzRmStorageContainerImmutabilityPolicy         1.9.0      Az.Storage
Cmdlet          Set-AzStorageAccount                               1.9.0      Az.Storage
Cmdlet          Set-AzStorageAccountManagementPolicy               1.9.0      Az.Storage
Cmdlet          Set-AzStorageBlobContent                           1.9.0      Az.Storage
Cmdlet          Set-AzStorageContainerAcl                          1.9.0      Az.Storage
Cmdlet          Set-AzStorageContainerStoredAccessPolicy           1.9.0      Az.Storage
Cmdlet          Set-AzStorageCORSRule                              1.9.0      Az.Storage
Cmdlet          Set-AzStorageFileContent                           1.9.0      Az.Storage
Cmdlet          Set-AzStorageQueueStoredAccessPolicy               1.9.0      Az.Storage
Cmdlet          Set-AzStorageServiceLoggingProperty                1.9.0      Az.Storage
Cmdlet          Set-AzStorageServiceMetricsProperty                1.9.0      Az.Storage
Cmdlet          Set-AzStorageShareQuota                            1.9.0      Az.Storage
Cmdlet          Set-AzStorageShareStoredAccessPolicy               1.9.0      Az.Storage
Cmdlet          Set-AzStorageTableStoredAccessPolicy               1.9.0      Az.Storage
Cmdlet          Start-AzStorageBlobCopy                            1.9.0      Az.Storage
Cmdlet          Start-AzStorageBlobIncrementalCopy                 1.9.0      Az.Storage
Cmdlet          Start-AzStorageFileCopy                            1.9.0      Az.Storage
Cmdlet          Stop-AzStorageBlobCopy                             1.9.0      Az.Storage
Cmdlet          Stop-AzStorageFileCopy                             1.9.0      Az.Storage
Cmdlet          Update-AzRmStorageContainer                        1.9.0      Az.Storage
Cmdlet          Update-AzRmStorageShare                            1.9.0      Az.Storage
Cmdlet          Update-AzStorageAccountNetworkRuleSet              1.9.0      Az.Storage
Cmdlet          Update-AzStorageBlobServiceProperty                1.9.0      Az.Storage
Cmdlet          Update-AzStorageServiceProperty                    1.9.0      Az.Storage

Actual Behaviour

If the module is pre-loaded by the Console, the module will not have any exported commands

PS C:\temp\Bug> Import-Module -Name Az
Import-Module: C:\Program Files\WindowsPowerShell\Modules\Az.Storage\1.8.0\Az.Storage.psm1:92:1
Line |
  92 |  Import-Module (Join-Path -Path $PSScriptRoot -ChildPath Microsoft.Azu …
     |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | Assembly with same name is already loaded

Import-Module: C:\Program Files\WindowsPowerShell\Modules\Az.Storage\1.8.0\Az.Storage.psm1:93:1
Line |
  93 |  Import-Module (Join-Path -Path $PSScriptRoot -ChildPath Microsoft.Azu …
     |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | Assembly with same name is already loaded

PS C:\temp\Bug> Get-Command -Module Az.Storage
PS C:\temp\Bug> 

Attached Logs

Bug.zip contains a PS1 file to use as a way to replicate the behavior.
fail.zip
workaround.zip
Bug.zip

[rjmholt]

I suspect this is the same issue as #2397.

Can you try out the VSIX in #2397 (comment) and let us know what happens?

[rjmholt]

Also, this is known not to happen in PS 6 and 7, since we have a particular solution available in .NET Core only

[APStrickland]

@rjmholt - Tried the Preview version zipped in #2397 without any luck. I had the same results as before.

[rjmholt]

Can you try this one:

psvsix.zip

Just want to double check.

Note you'll need to uninstall the PowerShell extension and reload VSCode to make sure the PowerShell Preview extension is the one you're seeing work

[APStrickland]

Uninstalled the PowerShell extension and the PowerShell Preview extension. Relaunched VSCode. Installed via the ZIP file. Relaunched VSCode. Issue remained.

Note: I was trying to run my scripts (Pester Tests) via a PowerShell 7 prompt outside of VSCode with similar results.

PowerShell 7.0.0
Copyright (c) Microsoft Corporation. All rights reserved.

https://aka.ms/powershell
Type 'help' to get help.

PS C:\Windows\System32> $PSVersionTable

Name                           Value
----                           -----
PSVersion                      7.0.0
PSEdition                      Core
GitCommitId                    7.0.0
OS                             Microsoft Windows 10.0.18363
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

I'm having a harder time putting together a simple repo test script for sharing without an attached editor as with VSCode but my scripts are consistently failing.
When I try

Get-Command -Module Az.Resources

after my scripts fail I get an empty result as with the original issue.

[rjmholt]

Oh, you're using PS 7! Well this is especially unexpected, since we did a lot of work on this for #2334 sorry #2292

[rjmholt]

Oh! You seem to be loading from the Windows PowerShell module path though.

Have you started VSCode from WIndows PowerShell and are running PS 7 in it?

[rjmholt]

If so, try starting VSCode from PS 7

[APStrickland]

I removed all Az modules from Windows Powershell's Module path. Reinstalled the required version via PS7 and all is well: Using both the extension you attached and the stable released version 2020.3.0.

Seems the transition from Windows PowerShell to PS 7 wasn't seemless for me.

Thanks for your assistance, cheers!