What can I do if Outlook not updating?
If Outlook not updating, it's likely due to server connectivity issues, outdated software, or a problematic Add-in. First, verify you have internet connectivity and the server status. Then, check if your Outlook needs an update by going to File>Office Account>Update Options>Update Now. If the issue persists, try operating Outlook in safe mode by typing "outlook.exe /safe" in the Run dialog box. If it updates, then a problematic Add-in may be the cause, which you must identify and remove.
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6 Simple Ways to Fix Outlook Inbox Not Updating
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6 Simple Ways to Fix Outlook Inbox Not Updating

If your outlook inbox not updating, perform these steps: Start the Outlook application.Click the File tab. Choose Options. Tap the Advanced tab now.