Outlook/Gmail integration fails as of yesterday

Question

Outlook/Gmail integration fails as of yesterday

RAYMOND BARBIERI 5

I received confirmation from Microsoft Support that this is a Known issue (although I have not seen this on any public forum).

Any status on when this will be resovled? Will we need to close or update Outlook? Reboot?

I mention this in hopes it saves someone else the trouble.

Microsoft Support said they would contact me when it was resolved.

Issue: gmail in the new Outlook was working well for me for the past several YEARS. However, yesterday, it said it could not authenticate. I removed the account and ever since I have not been able to re-add it. I get TEMPORARILYUNAVAILABLE

Microsoft Support: We are aware of the current service disruption causing authentication/sign-in, send/receive and account configuration issues with all the email account types within new Outlook which uses Microsoft cloud to sync your email accounts in new Outlook. Our team is actively investigating to effectively resolve the issue without introducing any additional impact.

Hornblower409 14,425 Reputation points

2026-09-03T16:08:33.5+00:00

@RAYMOND BARBIERI said

although I have not seen this on any public forum

As far as I can tell, there has been no official acknowledgement from Microsoft, in writing. But there are numerous recent user reports here and on Reddit. e.g.

https://learn.microsoft.com/en-us/answers/questions/5990690/

1 answer

Your answer

Hornblower409 14,425 Reputation points

2026-09-03T16:08:33.5+00:00

@RAYMOND BARBIERI said

although I have not seen this on any public forum

As far as I can tell, there has been no official acknowledgement from Microsoft, in writing. But there are numerous recent user reports here and on Reddit. e.g.

https://learn.microsoft.com/en-us/answers/questions/5990690/

Answer 1

Hi @RAYMOND BARBIERI

Given that Microsoft Support has already confirmed a current service disruption affecting authentication/sign-in for email accounts in New Outlook, avoid removing/re-adding the Gmail account, reinstalling Outlook, changing passwords, or repeatedly retrying authentication for now.

There are also multiple current reports of Gmail accounts failing in New Outlook with INVALIDCREDENTIALS / TEMPORARILYUNAVAILABLE, including accounts that were working normally beforehand. Similar incidents have previously recovered without users making configuration changes.

Since Support has told you they are investigating, treat this as a service-side issue until they confirm a fix. Use Gmail on the web/mobile temporarily and wait for Microsoft's update.

Once Microsoft confirms the incident is resolved, first close and reopen New Outlook, then retry authentication. A Windows reboot or Outlook reinstall shouldn't normally be necessary unless Microsoft specifically recommends it.

Thanks for posting the confirmation from Support. It helps others avoid unnecessary account resets while the service issue is being investigated.

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