powershell login error

ABBA 46

hi all
i am new to powershell and azure world. i am trying to login to my office365 azure using powershell. my admin account is MFA enabled. i am using connect-azuread command. i get the prompt to enter username/password and then approve the request using authenticator. but after approval from authenticator app i always get the error
Connect-AzureAD: One or more errors occurred. (Could not load type 'System.Security.Cryptography.SHA256Cng' from assembly 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.): Could not load type 'System.Security.Cryptography.SHA256Cng' from assembly 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
Connect-AzureAD: One or more errors occurred. (Could not load type 'System.Security.Cryptography.SHA256Cng' from assembly 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.)
Connect-AzureAD: Could not load type 'System.Security.Cryptography.SHA256Cng' from assembly 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
Connect-AzureAD: One or more errors occurred. (Could not load type 'System.Security.Cryptography.SHA256Cng' from assembly 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.): Could not load type 'System.Security.Cryptography.SHA256Cng' from assembly 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089

can you anyone please help me with this. what am i doing wrong here.

regards

VipulSparsh-MSFT 16,271 Reputation points Microsoft Employee

2021-02-05T05:59:30.997+00:00

@ABBA can you confirm the PowerShell version, this error indicates that the module you are trying to use .net core and does not have a System.Security.Cryptography.SHA256Cng class. This works perfectly fine with mine powershell 5.1
can you check with the same version ?

You can check the version using $PSVersionTable
ABBA 46 Reputation points

2021-02-08T00:26:45.703+00:00

i am using version 7
VipulSparsh-MSFT 16,271 Reputation points Microsoft Employee

2021-02-08T03:37:40.73+00:00

@ABBA Seems to be an issue with .netframework used in this module. check this for more reference.
Søren Laurits Nielsen 6 Reputation points

2021-03-23T21:52:51.48+00:00

Yes, because it is .net core based and not .net framework :-(

7 answers

Vasil Michev 103.9K Reputation points MVP

2021-02-05T08:01:24.147+00:00
If you are running this on PowerShell 7+/Core, you need to import the module in compatibility mode:

Import-Module AzureAD -UseWindowsPowerShell
Please sign in to rate this answer.

11 people found this answer helpful.
ABBA 46 Reputation points

2021-02-08T00:28:33.187+00:00

i am using version 7. i installed and imported the module and still getting the same error.

Vasil Michev 103.9K Reputation points MVP

2021-02-08T06:57:26.647+00:00

And did you try using the -UseWindowsPowerShell as suggested above?

ABBA 46 Reputation points

2021-02-09T23:41:22.083+00:00

yes. i did. i am getting an error when using this command

Mohamed Soliman 1 Reputation point

2021-08-23T09:21:08.29+00:00

Thanks it worked for me on my localmachine , but it's doesn't work when uploading the script to aws " lambda function" it shows the same error

{
"errorType": "FileNotFoundException",
"errorMessage": "Could not load file or assembly 'System.IdentityModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. The system cannot find the file specified.\n",
"stackTrace": [
"at Amazon.Lambda.PowerShellHost.PowerShellFunctionHost.ExecuteFunction(Stream inputStream, ILambdaContext context)",
"at lambda_method(Closure , Stream , Stream , LambdaContextInternal )"
]
}

Dragos R-A 0 Reputation points

2023-03-08T08:52:36.25+00:00

Thank you, Vasil. It worked after using your suggestion.

Viktor Ninov 0 Reputation points

2023-09-15T06:53:30.9766667+00:00

this worked for, thanks, Vasil :)

Jeremy 136 Reputation points

2024-03-04T14:21:35.3033333+00:00

This worked for me, having the same issue with ADSync, in PowerShell 7 as well.

Import-Module ADSync -UseWindowsPowerShell
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.
Dilgam Sharifov 26 Reputation points

2021-04-18T21:30:35.947+00:00

Thank you, it worked for me with "Import-Module AzureAD -UseWindowsPowerShell" in VS Studio.
Please sign in to rate this answer.

1 person found this answer helpful.
Daniel Neagu 1 Reputation point

2021-08-31T15:14:56.987+00:00

how did you excute the command in VS Studio?
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.
Daniele Ciribifera 6 Reputation points

2022-08-24T09:46:47.067+00:00

Hi all,

I can confirm that with PS 5 the module works.
Thank you all.

in brief:

C:\> powershell.exe -version 5.1
PS> Install-Module AzureAD
PS> Import-Module AzureAD
PS> Connect-AzureAD

regards
D
Please sign in to rate this answer.

1 person found this answer helpful.

0 comments No comments
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.
Tommy Svensson 6 Reputation points

2022-11-11T11:19:45.707+00:00

This does not work still.
Version 7.3.0 of powershell and 2.0.2.140 of AzureAD powershell module.

I get the same error trying to run "Connect-PimService".
Please sign in to rate this answer.

1 person found this answer helpful.

0 comments No comments
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.
Owen Murr 151 Reputation points

2021-03-09T09:04:43.157+00:00

This should no longer need the -usewindowspowershell.

Which version of the AzureAD module do you have installed, and have you updated to the latest stable version of Powershell core/7?
Please sign in to rate this answer.
Søren Laurits Nielsen 6 Reputation points

2021-03-23T21:54:09.26+00:00

Neither works :-(

My versions are: AzureAD 2.0.2.130, PowerShell 7.1.3, windows 10.

ARGH! I have to invite 150 users by hand here.

Owen Murr 151 Reputation points

2021-03-23T22:47:38.187+00:00

You may have to do it through Powershell 5.1 for this to work and get around the error message.

I will have a look at my install tomorrow with an MFA enabled account and update this post.

EDIT.

I have just tested this on my machine, I am adamant that I had this working but I am getting the same error as yourself.

Using @Vasil Michev fix works for me.

Try that again, if not use Powershell 5.1.

For further reading take a look at the Microsoft Graph Module.
Sign in to comment

Use comments to ask for clarification, additional information, or improvements to the question.

Share via

powershell login error

7 answers

Your answer