iCloud calendar has stopped responding.

My iCloud calendar stopped responding three years ago. I've tried to fix this three or four times through the icloud community with no luck. So I've given up. Today, I'll try again.

The Contacts, Photos, Notes, etc all work/synch. The Calendar always comes back to say "calendar has stopped responding". This is only on my Windows desktop. The iCloud Calendar, contacts, etc all work on my iPad and on my iPhone.

Please advise.