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FredrikLindberg
New Member

Add-PowerAppsAccount fails because method not found

Hi,

I have installed the PowerApps Powershell cmdlets. I am trying to run the Add-PowerAppsAccount command without success. 

I am running version PSVersion 5.1.17763.134 on a Windows Server 2019 Datacenter edition. 

 

I get the error:

 

Add-PowerAppsAccount : Method invocation failed because Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationContext] does not contain a method named 'AcquireToken'.
At line:1 char:1
+ Add-PowerAppsAccount -Endpoint preview
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [Add-PowerAppsAccount], RuntimeException
+ FullyQualifiedErrorId : MethodNotFound,Add-PowerAppsAccount

 

If I try the "Add-PowerAppsAccount -username $username -password $pwd" I get a similar error 

 

New-Object : Cannot find an overload for "UserCredential" and the argument count: "2".
At C:\Program Files\WindowsPowerShell\Modules\Microsoft.PowerApps.Administration.PowerShell\2.0.1\Microsoft.PowerApps.AuthModule.psm1:64 char:23
+ ... redential = New-Object Microsoft.IdentityModel.Clients.ActiveDirector ...

 

Looks like some kind of mismatch in versions? 

Any suggestions on how I can solve this? 

Thanks in advance!

 

/Fridden

7 REPLIES 7
v-xida-msft
Community Support
Community Support

Hi @FredrikLindberg ,

Do you import necessary PowerApps modules successfully within your PowerShell window? How do you import it?

Which endpoint do you want your PowerShell script to run on? USGOV endpoint?

 

I have made a test (PowerShell version 5.1.17763.316), but has a different issue with you. I would post this issue to my product team, if the issue is solved, I would reply here.

 

Currently, I found an alternative solution to fix this issue. Before you type 'Add-PowerAppsAccount' command within your PowerShell window, please execute the following two commands firstly:

 Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Force
 dir . | Unblock-File

1.JPG

 

The whole steps for install PowerApps PowerShell cmdlets as below:

1. Execute the following commands firstly:

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Force
dir . | Unblock-File

2. Import necessary modules:

Install-Module -Name Microsoft.PowerApps.Administration.PowerShell
Install-Module -Name Microsoft.PowerApps.PowerShell -AllowClobber

3. Add your PowerApps account:

Add-PowerAppsAccount   /* <-- Open a dialog to provide your credentials */

Or

Add-PowerAppsAccount -Username foo@bar.com -Password $pass

Note: Please run your PowerShell as Administrator.

 

On your side, please consider upgrade your PowerShell server to the latest version, then re-start your PC, try it again, check if the issue is solved.

Also please consider take a try to install your PowerApps cmdlets within your PC based on the following article:

https://docs.microsoft.com/en-us/power-platform/admin/powerapps-powershell

 

Best regards,

Community Support Team _ Kris Dai
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

I am getting the same error on 2019 datacenter 

 

PS C:\temp> $PSVersionTable

Name Value
---- -----
PSVersion 5.1.17763.1007
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.17763.1007
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1

The unblock file does nothing and i am running as administrator too.

I'm in the same state, running PowerShell as administrator, the workaround doesn't seem to help.

 

Name Value
---- -----
PSVersion 5.1.19041.1
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.19041.1
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1

 

I'm just trying to connect to the default endpoint.

richardcarrigan
Microsoft
Microsoft

Any resolution to this issue? I'm running PS version 5.1.19041.906 as an administrator and am encountering this issue.

Laney
MVP

Hi,

 

I am facing the same issue and I have executed all the steps above. Is there a resolution for this?
I am running PS version 5.1.19041.1023

 

richardcarrigan
Microsoft
Microsoft

Hi @Laney ,

 

Not necessarily a resolution, but I've found that prior to running a script using the PowerApps Admin module, I have to run 'Add-PowerAppsAccount' and authenticate first; then the script runs without error. However, if you don't run 'Add-PowerAppsAccount' first and then encounter the error, you must close the terminal window, reopen it, and then run 'Add-PowerAppsAccount and authenticate before trying to run the script again.

 

Hope this helps!

richardcarrigan
Microsoft
Microsoft

Hi @Laney and anyone else looking for a solution,

 

It seems as though running the Add-PowerAppsAccount cmdlet after certain other cmdlets (Get-AzADGroup in my case), causes this error, so simply moving the Add-PowerAppsAccount to run earlier in your script solves the issue.

 

Hope this helps!

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