When you open your calendar application on your Mac and you receive an error saying calendar app server responding with an error on your MacBook and unable to access your calendar then possible solutions you can try to fix calendar app server responding with error on mac will be refreshing your calendar and reactivating calendars, restart your mac in safe mode, reset NVRAM or Pram, delete calendar app cache will fix calendar app server responding with error message on your mac. Lets see them in detail below.
Solution 1 : Refresh Calendar to fix server responding with an error
Step 1: Open the Calendar app on your Mac. Then click the View menu.
Step 2: Now click on Refresh Calendars.
Solution 2 : Reactivate Calendars
Step 1: First click on Apple Menu and select System Preferences.
Step 2: Now click on Internet Accounts.
Step 3: Select your Calendar account that gives you this error message. Then Uncheck the “Calendars” box.
Step 4: Now restart your Mac.
Step 5: Once you restarted, go to System Preferences and re-enable Calendars. Then try to open the Calendar app to see if the problem has been fixed or not.
That’s it, once you refresh or reactivate calendars your calendar app will not receive or encounter the server responding with an error message again.
Solution 3 : Restart your Mac in Safe Mode
Step 1: If your Mac is turned on, then click the Restart button or if your Mac is turned off, Click Power button and immediately press and hold the Shift key.
Step 2: Now the Apple logo will appear on your Mac display. Wait for the login to appear. Once the login screen appears, you can release the Shift key.
Step 3: Next select your user Account and enter the password.
Step 4: If your startup disk is encrypted with FileVault, it will be asking you to login twice.
Solution 4 : Delete Caches to fix calendar app issues on MacBook
Step 1: Quit the Calendar app if it opens. Then open Activity Monitor and quit the CalendarAgent process.
Step 2: Now go to Finder and click Go. This will open the Go Menu and then press the Option key and click Library.
Step 3: Click Calendars. Then find the following Cache files and delete them by dragging to the Trash or you can move them to your desktop instead of the trash.
Step 4: Calendar Cache.
Step 5: Calendar Cache-shm.
Step 6: Calendar Cache-wal.
Step 7: Now go back to the Library folder and open the Preferences folder. Find the com.apple.ical.plist file. Move the folder to your desktop.
Step 8: Then restart your Mac. Once done open the Calendar app and check it.
Solution 5 : Restart NVRAM or PRAM for calendar issues
Step 1: First, Shutdown your Mac if it’s on.
Step 2: Then turn on your Mac by pressing the Power Button and immediately press and hold these four keys together “Option+Command+P+R”.
Step 3: Release this key when you hear the startup sound for a second time or when your Mac restarts (if your Mac has a T20 Security chip release this key when the Apple logo appears and disappears for a second time).
Step 4: Wait until your Mac restarts. It may take 20-25 seconds to restart.