Some incompatibility has arisen between the security policy of Google and the Windows 10 Mail app, resulting in many reports of error 0x8000000b being generated when trying to add a Gmail account to the Mail app in Windows 10.

Something went wrong, We’re sorry, but we weren’t able to do that. Error code 0x8000000b

Fix Windows 10 Mail app error 0x8000000b

Note: You may receive other error codes such as 0x8007042b, 0x80040154, 0x8000ffff, 0x8007000d, 0x80c8043e, 0x80070435, 0x8007006d, 0x80070425 associated with this same error message. Whichever error code you receive, the underlying issue remains, that you can’t add your Gmail account. Generally, the error prevents you from using your Gmail account on the Mail app.

Windows 10 Mail app error 0x8000000b

Launch the Mail app and click Accounts on the left pane. From the pop up on the right, under Manage accounts, click Add account.

Fix Windows 10 Mail app error 0x8000000b

Now in Add an account, click Advanced setup.

Fix Windows 10 Mail app error 0x8000000b

In the same Add an account window, click Internet email.

Fix Windows 10 Mail app error 0x8000000b

On the next screen on the same window, fill in your Gmail account details.

  • In the Incoming email server field, type in: imap.gmail.com:993
  • In the Account type field, type in: IMAP4
  • In the Outgoing email server field, type in: smtp.gmail.com:465

Ensure these options are checked:

  • Outgoing server requires authentication
  • Use same user name and password for sending email
  • Require SSL for incoming email.

Fix Windows 10 Mail app error 0x8000000b

Click Sign in when you’re done and wait for a few minutes, your Gmail account will be added successfully to Windows 10 Mail app without the error 0x8000000b.

That’s it, folks. I hope that helps.