Outlook not syncing with Gmail email

Joseph Tonnos 0 Reputation points
2026-10-19T19:15:57.4+00:00

Classic Outlook is syncing, but the "new" Outlook will not sync

Outlook | Windows | New Outlook for Windows | For home

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  1. AI answer

    2026-10-19T19:16:52.3166667+00:00

    Remove the Gmail account from new Outlook on this device only, then add it again and approve the Google permissions to rebuild the new Outlook connection.

    Reconnect Gmail in new Outlook

    Since Gmail already synchronizes in classic Outlook, use the new Outlook account controls rather than changing classic Outlook credentials or registry entries:

    1. In new Outlook, select View → View settings.
      Alternatively, select File → Account info.
    2. Select Accounts → Your accounts.
    3. Find the Gmail address and select Manage.
    4. Select Remove.
    5. In the removal dialog, choose Remove from this device, not Remove from all devices.
      “Remove from all devices” also removes Microsoft Cloud data across Outlook clients; items that exist only there might be permanently lost. Removing it from this device does not delete the Gmail account itself.^1^
    6. Return to Accounts → Your accounts and select Add Account.
    7. Enter the Gmail address and select Continue.
    8. Complete the Google sign-in and select Allow on the Google permissions page.
    9. Select Done, then allow up to 15 minutes and check whether new messages appear.

    These are the current Microsoft-documented Gmail account-management steps for new Outlook.^2^

    If reconnecting does not restore synchronization

    • Confirm the messages appear in Gmail in a browser. If they do, the issue remains with the new Outlook connection rather than Gmail delivery.
    • If only particular folders are missing, open Gmail settings and check that the relevant labels are exposed through IMAP. Microsoft specifically identifies Inbox, Sent Mail, Trash, and All Mail as folders that should be shown in IMAP.^3^
    • Gmail is a supported account type in new Outlook, although accounts transferred from classic Outlook can require authentication again. Accounts in a secondary classic Outlook profile might need to be added manually.^4^
    • Continue using classic Outlook as the temporary workaround and report the failure from new Outlook through Help → Feedback. Include whether the failure affects receiving, sending, folder changes, or all synchronization, along with any displayed error text.
    • For a Microsoft 365 Home subscription, use Contact Us on Microsoft’s new Outlook known-issues page if the account still fails immediately after a clean reauthorization.^5^

    Do not apply the Credential Manager or registry workarounds for errors 0x800CCC0E and 0x800CCC0F; those procedures address a separate classic Outlook issue, while classic Outlook is working here.

    References

    1. [New Outlook](https://support.microsoft.com/outlook/getstarted/add-an-email-account-to-outlook-for-windows#remove-an-account-in-new-outlook)
    2. Add a Gmail account to Outlook for Windows | Microsoft Support
    3. Fix problems connecting your Google account to the Microsoft Cloud
    4. Supported accounts in new Outlook for Windows
    5. Fixes or workarounds for recent issues in new Outlook for Windows ...
    AI-generated content may be incorrect. Read our transparency notes for more information.

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  2. John Jefferson Doyon 90,040 Reputation points Independent Advisor
    2026-10-19T21:04:57.2933333+00:00

    Thank you @Joseph Tonnos for providing the detailed isolation results. The fact that Gmail Web and Classic Outlook continue receiving messages while New Outlook and Outlook mobile stopped syncing after the same date is important evidence.

    Microsoft documents that Gmail accounts can synchronize through the Microsoft Cloud in New Outlook for Windows and Outlook mobile. You can review the official guidance here: Sync your account in Outlook to the Microsoft Cloud: https://support.microsoft.com/en-us/outlook/getstarted/sync-your-account-in-outlook-to-the-microsoft-cloud

    I cannot directly inspect Microsoft's internal synchronization logs or reprovision the server-side Gmail connector from this public forum. However, your findings warrant further investigation into the shared synchronization service rather than repeating local troubleshooting.

    Please submit a problem report through New Outlook using “Help” > “Feedback” > “Report a problem”. Include your findings, the October 18, 2026 cutoff, and the steps already completed. Enable “Collect logs for feedback” and “Can we contact you about this feedback” if those options are available.

    Should you need further info in the meantime, please let me know.

    Click "Add comment" to let me know.

    Thanks!

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