The Server Responded With An Error Ical iCloud [Solution]

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Refreshing and reactivating your calendars, restarting your computer in safe mode, resetting NVRAM or Pram, and deleting the calendar app cache are all potential fixes you can try to fix The Server Responded With An Error Ical iCloud.

This will fix the error message that appears when you open your calendar application on your Mac and receive the message “calendar app server responding with an error on your MacBook and being unable to access your calendar.” Here are some of them in more depth.

The Server Responded With An Error Ical iCloud [Reasons + Solution]

When you try to open your calendar or sync with something using iCloud after upgrading your Mac OS, typically, something needs to be fixed. The server answered with a “403” or the message “Access to iCloud is not permitted”.

But don’t let that frustrate or frighten you. We have a fix for the “The server responded: 403 to operation CalDAVSetPropertyQueueableOperation” 403 problem that appears in Calendar and iCloud. Everyone is aware of how significant iCloud is for online data storage.

The Server Responded With An Error Ical iCloud 1

You may access your data from anywhere, which is a benefit. One thing is sure, though: internet connectivity must be necessary. You do have all of your info on iCloud. Therefore, you must secure it. By turning on iCloud two-step authentication, you can accomplish this. Returning to fixing error 403 in Calendar and iCloud after downgrading or upgrading MacOS, follow the steps below.

Restart NVRAM Or PRAM For Calendar Issues

  • Step 1: If your Mac is on, turn it off first.
  • Step 2: After turning on your Mac by clicking the Power button, press and hold these four keys (Option+Command+P+R) simultaneously.
  • Step 3: Let go of this key when your Mac restarts or you hear the starting sound a second time (When the Apple logo appears and vanishes for a second time if your Mac has a T20 Security chip, press and hold this key.).
  • Step 4: Permit your Mac to restart. Restarting could take 20–25 seconds.

Reactivate Calendars 

  • Click the Apple Menu first, then choose System Preferences.
  • Select Internet Accounts from the menu.
  • Choose the Calendar account that is displaying this problem. Then deselect “Calendars” from the list.
  • Restart your Mac.
  • After restarting, open System Preferences and turn Calendars back on, then attempt to launch the Calendar app to determine whether the issue has been resolved.
  • That’s it; your calendar app won’t receive or run into the server responding with an error notice every time you refresh or reactivate calendars.

To Resolve Calendar App Difficulties On A MacBook, Delete Caches

  • If the Calendar app launches, close it. After that, shut down the CalendarAgent process and launch Activity Monitor.
  • Next, select Go from the Finder. When the Go Menu appears, click Library while holding the Option key.
  • Select Calendars. Then locate the following cache files, select them, and drag them to the Trash or your desktop if you like.
  • Cache the calendar.
  • Calendar Cache-she is step five.
  • Calendar Cache-wal is step six.
  • Return to the Library folder and open the Preferences folder in step seven. Locate the file The folder should now be on your desktop.
  • Next, restart your Mac in step eight. Once finished, check the Calendar application.

Restart Your Mac In Safe Mode

  1. Step 1: Press the Power button while simultaneously pressing and holding the Shift key if your Mac is off. If your Mac is on, click the Restart button.
  2. Step 2: Your Mac’s display will now display the Apple logo. As you wait, the login will appear. Release the Shift key once the login screen has appeared.
  3. Step 3: After choosing your user account, type your password.
  4. Step 4: You will be prompted to log in twice if your startup drive is FileVault encrypted.


Users of the Google Calendar, iCloud Calendar, and Mac Calendar apps may be impacted by this issue. Additionally, users have reported that a similar warning appears when they open the Calendar app.

This article describes resolving The Server Responded With An Error Ical iCloud issue if you are experiencing it. Please attempt the following procedures until your problem is fixed: Make sure your Mac runs the newest version of the Apple operating system before you do anything. Go to System Preferences > Software Update to quickly check for macOS upgrades.

Frequently Asked Questions

What is 404 on the iCal server?

This suggests that either the calendar account is inaccurate or the calendar server may be acting strangely. Your calendar data can be accessed at a URL produced by the CalDAV calendar server because it is built as a web service and uses a web server like Apache.

Why won’t my iCal synchronize with my iPhone?

Ensure that the same Apple ID is used for logging into iCloud on all your devices. Check your iCloud settings to see if Contacts, Calendars, and Reminders are enabled. Ensure your device’s date and time settings are accurate for where you are.

How can my iCloud calendar be fixed?

Start by forcing the app to refresh and sync with the online data in iCloud. To do this, launch the Calendar app and swipe down from the top. You can force the application to shut down and restart it if it doesn’t fix the issue.

What does iCal error 500 mean?

Verify your URL entry with the calendar owner if you experience “Error code: 500” when attempting to add a calendar using an iCal address.

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