How to sort out Outlook Inbox Not Updating?

Try updating folders manually to resolve the outlook inbox not updating. issue. Because of problems with internet access and other circumstances, Outlook's content and folders don't always update instantly. To manually update it in Outlook, use the Update folder option from the Send/Receive tab at the top of the screen. Try switching back and forth between working in the Online and Offline modes as an alternative. To start resolving the problem, you could also delete the offline items from Outlook.