Importing Az.Accounts on a version higher than 2.7.0 on PSH 5.1 will silently provide an error in $error

[YannickJanssens]

Description

Importing Az.Accounts with a version above 2.7.0 will silently add an error to $error when using PowerShell 5.1.x
The latest version (2.7.5) will show the the following:

Could not load file or assembly 'System.Reflection.DispatchProxy, Version=4.0.4.0, Culture=neutral, PublicKeyToken=b03f 5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.

I've tried this on multiple workstations with the same effect. The module itself does seem to work normally.
Using Powershell 7.x does not give an error.

Issue script & Debug output

PS C:\WINDOWS\system32> import-module az.accounts
PS C:\WINDOWS\system32> $error
Add-Type : Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more informati
on.
At C:\Program Files\WindowsPowerShell\Modules\az.accounts\2.7.5\Az.Accounts.psm1:39 char:21
+ ...                Add-Type -Path $_.FullName -ErrorAction Ignore | Out-N ...
+                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Add-Type], ReflectionTypeLoadException
    + FullyQualifiedErrorId : System.Reflection.ReflectionTypeLoadException,Microsoft.PowerShell.Commands.AddTypeComma
   nd

PS C:\WINDOWS\system32> $error[0].Exception.GetBaseException().LoaderExceptions
Could not load file or assembly 'System.Reflection.DispatchProxy, Version=4.0.4.0, Culture=neutral, PublicKeyToken=b03f
5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.

Environment data

Name                           Value
----                           -----
PSVersion                      5.1.22000.613
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.22000.613
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

Module versions

ModuleType Version    Name                                ExportedCommands
---------- -------    ----                                ----------------
Script     2.7.5      Az.ACcounts                         {Add-AzEnvironment, Clear-AzContext, Clear-AzDefault, Conn...

Error output

Message        : Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
StackTrace     :    at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)
                    at System.Reflection.Assembly.GetTypes()
                    at Microsoft.PowerShell.Commands.AddTypeCommand.LoadAssemblyFromPathOrName(List`1 generatedTypes)
                    at Microsoft.PowerShell.Commands.AddTypeCommand.EndProcessing()
                    at System.Management.Automation.CommandProcessorBase.Complete()
Exception      : System.Reflection.ReflectionTypeLoadException
InvocationInfo : {Add-Type}
Line           :                     Add-Type -Path $_.FullName -ErrorAction Ignore | Out-Null

Position       : At C:\Program Files\WindowsPowerShell\Modules\az.accounts\2.7.5\Az.Accounts.psm1:39 char:21
                 + ...                Add-Type -Path $_.FullName -ErrorAction Ignore | Out-N ...
                 +                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HistoryId      : 29


The Azure PowerShell team is listening, please let us know how we are doing: https://aka.ms/azpssurvey?Q_CHL=ERROR.

[dingmeng-xue]

@vidai-msft, please help to look into this question.