Fixing error message 0x800CCC0E when it only impacts one account

Did you recently change affected gmail's password? Microsoft is still investigating this issue. The current workaround is published here: https://support.microsoft.com/office/users-get-errors-0x800ccc0e-0x800ccc0f-synchronizing-gmail-and-yahoo-accounts-in-classic-outlook-e5a7b684-7c5c-4848-ab2d-d48291451f67

Error 0x800CCC0E in classic Outlook indicates a connection problem to the mail server. Because it affects only one Gmail account and the same account works on the phone, focus on Outlook profile, Gmail/IMAP settings, and how that account is configured in Outlook.

Use these steps in order:

1. Confirm Outlook build and Gmail fix status

• Ensure classic Outlook is updated to a build that includes the Gmail fixes mentioned in the articles (for example, Current Channel Version 2404 or later for sign‑in, and 2412 Build 18324.20168 for the Gmail permission fix).
• In Outlook, go to File > Office Account > Update Options > Update Now.

2. Re‑run Gmail consent for Microsoft apps (if this account was added via OAuth) If this Gmail account was added using the modern Google sign‑in window (not manual IMAP settings):

• Trigger a send/receive so the error appears.
• If the error dialog shows a Retry link, select Retry.
• In the browser sign‑in that opens, sign in to the problematic Gmail account and make sure to check the permission box:
  • “Read, compose, send, and permanently delete all your email from Gmail.”
• Complete the sign‑in and return to Outlook, then test Send/Receive again.

This addresses the scenario where the Gmail account was added but the required Microsoft apps & services permission was not granted, which can cause connection/sync errors for that specific account.

3. Verify IMAP is enabled for that Gmail account The error “We weren’t able to set up your Google account with IMAP. You may need to make changes to your Gmail settings.” and 0x800CCC0E‑type issues can occur if IMAP is disabled on that Gmail account.

• In a web browser, sign in to the problematic Gmail account.
• Follow Google’s guidance in Add Gmail to another email client to confirm IMAP is enabled (if the setting is still present for that account).
• If IMAP was disabled, enable it, save changes, then restart Outlook and test again.

4. Recreate the Gmail account in Outlook via Control Panel (classic profile) If the above does not resolve it, recreate only the failing Gmail account in the Outlook profile:
5. Close Outlook.
6. Open Control Panel in Windows.
7. Select Mail.
8. Select Email Accounts….
9. Select the problematic Gmail account and choose Remove.
10. Still in Email Accounts…, select New.
11. Enter name, the Gmail address, and the Gmail password in Password and Retype Password, then select Next.
12. Follow the on‑screen steps to complete setup. You may be prompted for the password again.
13. When setup completes, select Finish, then reopen Outlook and test Send/Receive.

This uses the recommended account‑add flow and can clear a corrupted configuration affecting only one account.

5. Check SPA and basic IMAP settings (if using manual IMAP configuration) If the problematic Gmail account was added as a manual IMAP account:

• In Outlook, go to File > Account Settings > Account Settings.
• Select the Gmail account > Change > More Settings > Outgoing Server / Advanced.
• On the IMAP details page, ensure Require logon using Secure Password Authentication (SPA) is unchecked.
• Save and test again.

6. Consider TLS 1.3 registry issue (if other IMAP/POP issues appear) If other IMAP/POP accounts also show intermittent connection errors, there may be a TLS 1.3–related issue on that Windows profile. The documented workaround is to remove the TLS 1.3 key under the Schannel Protocols in the registry and restart Outlook/Windows. This is an advanced step and should be done carefully, ideally by someone comfortable with editing the registry, and only after exporting the existing TLS 1.3 key as a backup.
7. If only this Gmail account still fails If after all steps above only this Gmail account continues to show 0x800CCC0E while others work:

• Double‑check that the account password used in Outlook is correct and matches the one used on the phone.
• If using an app password (for example, with 2‑step verification), confirm that the app password is a Google app password for this Gmail account, not a Microsoft app password.
• As a last resort, create a new Outlook profile from Control Panel > Mail > Show Profiles, add only this Gmail account, and test. If it works in a new profile, the original profile is likely corrupted.

References:

• Unable to add a Gmail account to classic Outlook
• Unable to sign in or add a Gmail account to classic Outlook
• Troubleshoot Outlook email setup
• I can't send or receive messages in Outlook
• Outlook IMAP or POP server unexpectedly terminated the connection, and the server was interrupted
• Stopped receiving emails on my account. - Microsoft Q&A
• gmail accounts no longer working in outlook classic - Microsoft Q&A
• search for solutions another user has found - Microsoft Q&A