Why is my outlook calendar not showing appointments?

There are several reasons for the outlook calendar not showing appointments issue. The desktop and mobile platforms sync the Outlook account. On your phone, if you unintentionally delete an appointment, it won't show up on the desktop version. It's possible that you mistakenly removed the appointments.
On the other hand, some users have auto-archive enabled. It moves the data to the archive directories after a set number of days. If data from Outlook is open to editing by outside programs, this problem may arise.

Outlook Calendar not Showing Appointments | How to Fix?
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Outlook Calendar not Showing Appointments | How to Fix?

If your Outlook calendar not showing appointments then there may be a temporary glitch in Outlook. Get help to show appointments.