Hi @Leslie Olson ,
Welcome to our forum!
Is there any error when you are unable to add the Gmail?
And does this issue occur with other accounts?
Considering that the issue occurs frequently, it is recommended that you could try to uninstall and reinstall New Outlook to check if there're any differences.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.