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Office 365 Exchange online

  • 15 November 2022
  • 6 replies
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Just a question, We busy in the process in configuring backups for office 365, exchange online to particular and i see i am getting this error in the Logs when it tries to scan for mailboxes. “ Failed to get Oauth2.0 token for powershell”.

 

We also configured for onedrive and sharepoint and those seem to be working 100%.

 

We on Version: 11.24.34

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Best answer by Juan-Pierre Panaino 21 November 2022, 08:15

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Userlevel 7
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Hi @Juan-Pierre Panaino , thanks for the post.

Disable multi-factor authentication or conditional access policies for the Exchange Online mailboxes that you want to configure for backup operations.

That should resolve the error.

Keep me posted!

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Hi @Mike Struening  

So i set it up as express so the global admin account i used i did disable the MFA on it and it setup succesfully just when it refreshes for the users i see that error in the Log files.

Userlevel 7
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That definitely should have worked.

I would go ahead and open a support case so they can see why it’s not acting as expected.

Can you share the case number here once created?

Userlevel 5
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@Juan-Pierre Panaino 

Are you able to connect to o365 via powershell? Something like this

https://learn.microsoft.com/en-us/microsoft-365/enterprise/connect-to-all-microsoft-365-services-in-a-single-windows-powershell-window?view=o365-worldwide

Once complete you should be able to run get-mailbox to list the mailboxes.

This connection is where is failing you might need to run the following first

Set-ExecutionPolicy RemoteSigned

 

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Thanks guys ,

 

Sorry only getting back now to you it was a permissions issue on azure we have a condional access policy that blocks legacy AUTH, and PowerShell is part of this policy i have then excluded my app registration from that policy and problem was resolved.

Userlevel 7
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Glad to hear it!

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