Microsoft Calendar app not working

wgt40w said:

HOW TO FIX - open Microsoft Store / on left Click Library - a list will show of the apps on your computer/ top right Click on Get Updates - wait a bit and hopefully from today Mail and Calendar will show an update of 38.47Mb - let this download and install.
After this you should be able to open Calendar OK - in my case Calendar opened with NO data showing - in Mail/ Click on Accounts/ Click on your email address account showing/ Click on "Delete this account from this device". Close Mail and then re-open it/ Click on Accounts/ Add Account and a list of suggested email addresses will show/ Click on the same email address as the one on the account you just deleted. After doing this - for me Calendar then opened showing all my saved calendar future events.
PS Unless you are lucky, this update appears to be the only 'certain' fix - as the problem was caused by a faulty Calendar app update that, for me came on 1st March.

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Graulges said:

When I start the Calendar app from Start /All Apps/Calendar (or anywhere else) all I get is a splash screen for a few seconds then it shuts down. I'm on 22H2 2263.1325. It's not on long enough to get a screenshot. There's just a plain blue window with the calendar icon. Any suggestions please?

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ZMIS said:

This worked for me! Thanks a million

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conlyn82 said:

I'm having the same issue...my Desktop PC with Windows 11 22H2 – OS build 22621.1344 -- the Mail app is fine, but the Calendar apps starts to open and immediately closes. Meanwhile, my laptop is running Window 11 22H2 – OS Build 22621.1105 and both Mail and Calendar apps work fine.

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