#Requires -Modules causes error "Import-Module: Assembly with same name is already loaded"

Steps to reproduce

Call a script or function with #Requires -Modules [module info], while having the the required module installed. I’ve only tested with the PartnerCenter module, using either of these in my tests:

#Requires -Modules @{ModuleName='PartnerCenter';ModuleVersion='3.0.10'}, Az.Accounts

or

#Requires -Modules PartnerCenter

Both produce the same error when calling the script.

PS C:\Users\MY-USER> .\Documents\GitHub\PowerShell\Connect-PartnerCenterAsSecureApp.ps1
Import-Module: Assembly with same name is already loaded

The script I’m calling is very basic (https://github.com/JeremyTBradshaw/PowerShell/blob/master/Connect-PartnerCenterAsSecureApp.ps1)

Expected behavior

I expect the script to not fail immediately and instead carry on because I have the module that is required already installed, and it shouldn’t matter if it is already loaded or not. For this example script, I should get prompted for the values of the mandatory properties whereas my example has omitted using any parameters.

PS C:\Users\MY-USER>.\Documents\GitHub\PowerShell\Connect-PartnerCenterAsSecureApp.ps1

cmdlet Connect-PartnerCenterAsSecureApp.ps1 at command pipeline position 1
Supply values for the following parameters:
CSPTenantId:

Actual behavior

PS C:\Users\MY-USER> .\Documents\GitHub\PowerShell\Connect-PartnerCenterAsSecureApp.ps1
Import-Module: Assembly with same name is already loaded

Environment data

Name                           Value
----                           -----
PSVersion                      7.0.3
PSEdition                      Core
GitCommitId                    7.0.3
OS                             Microsoft Windows 10.0.19041
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

[JeremyTBradshaw]

@vexx32 and @iSazonov thanks again for you help. I just uninstalled the older 1.5.2 version of Az.Accounts (from the AllUsers scope) and installed the latest into CurrentUser. This immediately solved my problem.

I wish I had caught this before opening the issue, so apologies for the wasted cycles.

[iSazonov]

I see PartnerCenter depends on NewtonSoft.Json - perhaps Az module too but another version. https://github.com/microsoft/Partner-Center-PowerShell/tree/master/src/lib/NetFxPreloadAssemblies

<div> GitHub</div><div>microsoft/Partner-Center-PowerShell</div><div>PowerShell module for managing Partner Center resources. - microsoft/Partner-Center-PowerShell</div>