Users get errors 0x800CCC0E & 0x800CCC0F synchronizing Gmail and Yahoo accounts in classic Outlook

Last Updated: March 9, 2026

ISSUE

After changing your Gmail or Yahoo account passwords in classic Outlook you are not prompted to sign in. There might be other circumstances that lead to this same issue that we are investigating.

You see errors like the following: Task 'Synchronizing subscribed folders for username@gmail.com.' reported error (0x800CCC0E) : 'Outlook cannot synchronize subscribed folders for username@gmail.com.

Sending reported error (0x800CCC0F)

Check for new mail reported error (0x800CCC0E)

Outlook send receive progress

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:

Right click the Windows Start Button, select Run, type Regedit and select OK.
Paste the path below in the Regedit Address Bar and press Enter.Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity\Identities
Under the Identities key, select each sub key until you find the one that matches the email address that is not syncing.
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.