Outlook not connecting to gmail servers

Question

Receiving 2 errors:

Task 'Synchronizing subscribed folders for ******@gmail.com.' reported error (0x800CCC0E) : 'Outlook cannot synchronize subscribed folders for ******@gmail.com. Error: Cannot connect to the server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).'

Task '******@gmail.com - Sending' reported error (0x80070057) : 'Sorry, something went wrong. You may want to try again.'

I cannot connect to receive or send emails. I tried the workaround but it did not work.

Answer 1

Thanks for the update, Michael.

Please restart the PC if you have not.

In https://www.yourwindowsguide.com/2026/03/gmail-not-working-in-outlook.html, please see the section

Remove access for Microsoft Apps & Services in Gmail (Fix Gmail in Outlook Sync) and Credential manager, and see if that helps.

I’m eager to hear back and work together to find a solution.

A Windows MVP writes content on the above website, so it is safe. However, do watch out for the ads. It should translate into your Browser language automatically.

Answer 2

Hi,

It is a known issue.

Via https://support.microsoft.com/en-us/office/users-get-errors-0x800ccc0e-0x800ccc0f-synchronizing-gmail-and-yahoo-accounts-in-classic-outlook-e5a7b684-7c5c-4848-ab2d-d48291451f67

STATUS: INVESTIGATING

The Outlook Team is investigating this issue. We will update this topic with fix status as soon as we get it.

WORKAROUND

To work around the issue, do the following:

1. Right click the Windows Start Button, select Run, type Regedit and select OK.
2. Paste the path below in the Regedit Address Bar and press Enter. Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity\Identities
3. Under the Identities key, select each sub key until you find the one that matches the email address that is not syncing.
4. Delete the Identities registry key, example in red below. Look for the corresponding Gmail or Yahoo email address, example in purple. That is the identity key in the left column to delete. After you delete the key, restart Outlook and sign in again.
5. 

Also refer: https://www.yourwindowsguide.com/2026/03/gmail-not-working-in-outlook.html

I hope this information helps. If you have any more questions, don't hesitate to reach out.

Otherwise, please take a moment to rate the answer. Wishing you good luck!

A Windows MVP writes content on the above website, so it is safe. However, do watch out for the ads. It should translate into your Browser language automatically.

Answer 3

The errors match a known issue when connecting Gmail to classic Outlook.

Use these steps in order:

1. Confirm Outlook build and use Retry
   • Make sure Outlook is updated to at least Current Channel Version 2412 Build 18324.20168. See About Office: What version of Office am I using? from the referenced article.
   • When the Gmail error appears in Outlook, select the Retry link in the error window.
   • In the browser sign-in page for Google, ensure the permission box is checked for:
     • “Read, compose, send, and permanently delete all your email from Gmail.”
   • Complete the sign-in and let Outlook resync.
2. If Retry does not work, re‑add Gmail with correct permissions
   • Remove the problematic Gmail account from the Outlook profile.
   • Add the Gmail account again.
   • During the Google sign-in flow in the browser, make sure the same permission box is checked:
     • Select what Microsoft apps & services can access: “Read, compose, send, and permanently delete all your email from Gmail.”
   • Finish setup and test send/receive.
3. Verify Gmail IMAP and server settings
   • In a browser, sign in to Gmail.
   • Go to Settings > Forwarding and POP/IMAP.
   • Under IMAP Access, select Enable IMAP, then Save Changes.
   • In Outlook, confirm the Gmail account is using these settings:
     • Incoming (IMAP) server: imap.gmail.com, SSL required, port 993
     • Outgoing (SMTP) server: smtp.gmail.com, SSL or TLS required, authentication required
       • Port 465 for SSL, or 587 for TLS/STARTTLS
4. Ensure required Gmail folders are exposed via IMAP
   • In Gmail settings, open the Labels tab.
   • For Inbox, Sent Mail, Trash, and All Mail, make sure Show in IMAP is selected.
   • Optionally enable Show in IMAP for any other labels that should appear in Outlook.
   • Back in Outlook, allow up to 15 minutes for sync to refresh.

If these steps are followed with the correct Google permission box checked and IMAP enabled, the 0x800CCC0E sync error and 0x80070057 send error should be resolved for the Gmail account in classic Outlook.

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References:

• Unable to add a Gmail account to classic Outlook
• Fix problems connecting your Google account to the Microsoft Cloud