Hi All, Quite a newbie to PowerShell, so would appreciate some assistance with an existing script that I've been asked to changed to Modern Authentication. I can see the line that I believe needs to be amended as the following: $Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential $Credential -Authentication Basic -AllowRedirection I've looked up some sites and pages (including the ones offered as I type this message). But as someone quite new to PowerShell, I don't know if they apply as the commands are somewhat different. Happy to elaborate further, but please bare in mind my newness to the system. Thanks.

Hi , Do you mean you need to connect to Exchange Online PowerShell with modern authentication? If so, you could refer to this link to run ”Connect-ExchangeOnline” command to connect . In addition ,please make sure Windows PowerShell has EXO V2 module installed . About the Exchange Online PowerShell V2 module | Microsoft Learn If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Use App-only authentication: https://learn.microsoft.com/en-us/powershell/exchange/app-only-auth-powershell-v2?view=exchange-ps

Changing PowerShell Scripts to Modern Authentication

Accepted answer

Aholic Liang-MSFT 13,856 Reputation points Microsoft Vendor

2022-09-06T08:37:12.183+00:00

Hi ,
Do you mean you need to connect to Exchange Online PowerShell with modern authentication?
If so, you could refer to this link to run ”Connect-ExchangeOnline” command to connect .

In addition ,please make sure Windows PowerShell has EXO V2 module installed .
About the Exchange Online PowerShell V2 module | Microsoft Learn

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
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Chris Kirschnick 26 Reputation points

2022-09-06T13:07:49.313+00:00

I have the ExchangeOnlineManagement module installed (V2.0.5) already.

I can run the commands manually, but I need them to run as apart of an automated script, which runs overnight, so this needs to be a non-interactive authentication.

I have read some options of using certificates and thumbnails, as MFA would obviously not be possible with non-interactive runs of this powershell script. The link you've provided also talks about using MFA and using the Get-Credentials command as a variable. I've looked at this page before, but as it's an unattended script, I can't follow the commands.

Thanks.

Aholic Liang-MSFT 13,856 Reputation points Microsoft Vendor

2022-09-09T02:43:37.013+00:00

Hi,

but I need them to run as apart of an automated script, which runs overnight, so this needs to be a non-interactive authentication.

Have you viewed the documentation of App-only authentication that Andy provide？
If the reply was helpful, you can click the "Accept Answer" button under his post so that other's with similar question can benefit from this thread as well.
If you still have further questions or concerns, feel free to post back.

Chris Kirschnick 26 Reputation points

2022-10-05T12:24:39.343+00:00

I ended up using the following, which is a lot simpler than I expected it to be:

Connect-ExchangeOnline -Credential $Credential

It used the encrypted stored key and the username of the service account and has been running fine.

Thanks for the assistance.

Brad Krakow 1 Reputation point

2022-12-28T14:13:44.93+00:00

Chris,

Here is what you posted above.
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential $Credential -Authentication Basic -AllowRedirection

What did you remove and where did you type in the Connect-ExchangeOnline.... I am having the same issue and want to make sure I do this correct before I make the change.
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Changing PowerShell Scripts to Modern Authentication

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