Hi @Jon Matheson
Welcome to our forum!
Do you mean New Outlook stopped working?
Are there any error messages?
Based on my research, this is a problem that a lot of users are reporting at the moment: they can't receive/send mail, and it may not be syncing with Gmail.
Try deleting and re-adding accounts from all your devices, then wait a while to see if it works. Thank you for your patience and understanding!
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