Sending, receiving, and organizing email in Outlook.com
We resolved the error in the end by removing my Gmail account from Outlook completely and reinstating it with a new app password from Gmail. It had a Gmail app password before so I don't know if it was the new password or the fact that we removed it and reinstated it. I am using Microsoft 365. There was never any error message, anywhere, ever, and no stuck tasks. I don't know if there was an update from Microsoft but I hadn't made any changes to anything. I have never had IMAP, I only ever use POP for my Outlook, because of my Folder system designed around my work on Outlook. We had to reconfigure POP manually (otherwise it would do IMAP and I would lose all my folders). After successfully reconfiguring, it started receiving as normal. I have no idea why it went wrong, I just hope it continues as normal now