Issue with access to gmail account.

Question

Unable to access my [--PII REMOVED--] @gmail account via outlook. This just started happening today.

Answer 1

Hi Earnestine Cusack,

Please note that our Microsoft Q&A forum is a public platform, and we will modify your response/ question to hide your personal information in the description. Kindly ensure that you hide any personal or organizational information the next time you post an error or other details to protect personal data.

I'm sorry to hear you're experiencing this issue, and I understand how frustrating it can be when access to your Gmail account through Outlook suddenly stops working.

Based on the information provided, this may be related to a temporary service-side issue affecting connectivity or authentication between Outlook and Gmail. Microsoft is actively monitoring and working to resolve known service-related issues when they occur.

For now, I would recommend waiting up to 24 hours and then testing the account again, as temporary backend issues often resolve once service stabilization is completed.

In the meantime, you can monitor the current status of Microsoft cloud services here: https://status.cloud.microsoft/

Thank you for your patience and understanding. We appreciate your cooperation while the issue is being resolved.

Answer 2

For classic Outlook for Windows, the fastest checks are:

1. Verify Gmail IMAP is enabled.
   • In a browser, go to Gmail.
   • Select Settings > Forwarding and POP/IMAP.
   • Under IMAP Access, select Enable IMAP and save changes.
2. Make sure Gmail folders are available to Outlook.
   • In Gmail Settings > Labels.
   • Confirm Show in IMAP is enabled for Inbox, Sent Mail, Trash, and All Mail.
3. If Outlook stopped syncing today and is no longer prompting for sign-in, force a new sign-in prompt.
   • Close Outlook.
   • Open Credential Manager from the Windows Start menu.
   • Go to Windows Credentials > Generic credentials.
   • Remove entries that start with MicrosoftOffice16_Data:OAUTH2 for the Gmail account.
   • Restart Outlook and sign in to Gmail again.
   • If mail still does not start syncing immediately, restart Outlook one more time.
4. If the problem started after a Gmail password change, Outlook may not prompt immediately.
   • After a password change, it can take about one hour for the OAuth token to expire.
   • After that, Outlook should prompt for sign-in. Removing the cached OAuth credentials as above can force the prompt sooner.
5. If Outlook shows errors such as 0x800CCC0E, 0x800CCC0F, or 0x80070057, use the same credential-removal steps above first.
6. If adding the Gmail account fails with messages like “The browser or app may not be secure” or “We weren’t able to set up your Google account with IMAP”, update classic Outlook to a fixed build.
   • The fix is available in:
     • Current Channel / Current Channel Preview / Beta Channel: Version 2404 (Build 17531.10000)
     • Monthly Enterprise Channel: Version 2407 (Build 17727.10000)
   • In Outlook, go to File > Office Account > Update Options > Update Now.
7. If Outlook still cannot sync after removing credentials, a registry-based identity reset is another documented workaround.
   • This is higher risk than Credential Manager changes because incorrect registry edits can affect Outlook sign-in state.
   • Close Outlook, open Regedit, go to: Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity\Identities
   • Delete only the identity subkey that matches the affected Gmail address, then restart Outlook and sign in again.

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References:

• Fix problems connecting your Google account to the Microsoft Cloud
• Users get errors 0x800CCC0E & 0x800CCC0F synchronizing Gmail and Yahoo accounts in classic Outlook
• Unable to sign in or add a Gmail account to classic Outlook