Hi Kent,
Do you set Gmail in Outlook web mail or Outlook desktop client?
Could I know how do you add Gmail to outlook as an alias? You can share detailed steps here for further research.
If you mean outlook alias, please check the steps in
this article to remove it.
For Outlook client, to update account information, it’s recommended to remove and then re-add account via following DumbleD0re’s suggestion above.
If I’ve misunderstood anything, please feel free to post back.
Regards,
Perry
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