Here, we will be discussing some of the most useful solutions from the ones available on Microsoft Support website.
There might be messages stuck in your Outlook, consider cleaning them first.Confirm that your Outlook email settings are appropriate.
Method A: Use Microsoft Outlook Inbox Repair ToolNavigate to the Control Panel via the Windows 10 Start menu.
Find a tab named File Explorer, click on it.
A new window will open up.Now, open the “View” tab and select “Show hidden files, folders, and drives.”After this, search for a file named “Scanpst.exe” from the Start menu.Once done, you will be directed to the Inbox Repair tool.
Opening in this mode helps skip any bugs in the client that otherwise won’t go away before the next restart/update.