Hi @Charles Mackres ,
Welcome to our forum!
What's the version of your Outlook? (File > Office Account > About Outlook). Please make sure you have upgraded your Outlook to the latest version.
How did you add your Gmail account in Outlook?
It is suggested that you could try to create a new profile (Control Panel>Mail>Show Profiles>add) and add the account.
More information about Gmail app password:
(Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.)
Hope to help you!
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