iCal server responded with an error 403? Here’s Fix

Last Updated on Jun 17, 2021

Generally, you’ve upgraded your Mac OS and after that whenever you’ll try to open your calendar or iCloud and sync with something. At that time you will get either the server responded ‘’403’’ or Access to iCloud is not permitted. But don’t frustrate and don’t worry about that.  We have got a Solution to overcome the 403 error of Calendar and iCloud with the message “The server responded: 403 to operation CalDAVSetPropertyQueueableOperation“. Everybody knows that iCloud is more important for online data storage.

The merit of that you can access your data everywhere in the world. But, one thing is there internet connections must be required. Even you’re all the data in iCloud right? So, you must have to make it secure. You can do it by enabling iCloud two-step Authentication. Let’s back to how to fix the 403 error of Calendar and iCloud after Downgrade or Upgrade MacOS, follow the beneath step and fix your error 403 and enjoy it.

An error maybe Gmail calendar server issue

it might be Time Zone related [Most of night time error, less in the morning in some timezone]

Read more: How to take a backup of Data from the iOS device on iTunes & iCloud

Steps Mac calendar the server responded with an error 2021

1: Check Apple System Status

Whenever the server error started popping up. Check all the Apple services including the iCloud service are down in your region. Otherwise, you have to wait for Up and Ready to use.

Use this link to check Apple System status on your Browser,

• USA
• https://www.apple.com/support/systemstatus/

Step: 1 Turn off and Turn on Calendar Syncing on Mac

1. Go to the Apple Logo from Top Mac Menu > System Preferences.

Select Apple ID.

Select iCloud from the side of the window and Uncheck and Check Calendar.

• Older MacOS X:  Click on the Apple Logo System Preferences >> iCloud >> Unchecked calendar

Step: 2 – Clear Calendar Cache on Mac

The main cause of these Calendar issues is related to corrupted Mac Calendar Cache files. Re-Build the Calendar cache file after delete it. Follow the below ways to Perform & Fix it.

1. First Quit the Calendar app on the Mac. From top Menu, File > Calendar > Quit Calendar.
2. Force close, Calendar “CalendarAgent” from Activity Monitor. Launch Activity Monitor and Search “CalendarAgent“,

Then Select the Process and Force close from the top Close button.

Now, Clear up Saved Cache, and Regenerate.

Open Finder on Mac, From Top Mac Top Menu, Go > Go to Folder

Enter the Commands to Find all Cache files on macOS Big Sur and Later, and MacOS Catalina, High Sierra, and MacOS Sierra.

~/Library/Calendars/Calendar Cache

~/Library/Calendars/Calendar Cache-shm

~/Library/Calendars/Calendar Cache-wal

Delete Three Cache files,”Calendar Cache”, “Calendar Cache-shm” and “Calendar Cache-wal” file from the cache folder.

Restart your Mac and Re-open the Calendar app. These all cache files will regenerate and You get fixed your problem.

For macOS Mavericks & Earlier…

if you find the Plist file then, Enter the Commands to Find all Cache files.

Type the Below command and Find the file location one by one. And Remove the file.

~/library/Application Support/iCal

~/library/Caches/iCal

~/library/Caches/com.apple.iCal

~/library/Preferences/com.apple.iCal.plist

~/library/Preferences/com.apple.iCal.AlarmScheduler.plist

~/library/Preferences/com.apple.iCal.helper.plist

An important step is, You have to Restart your Mac completely and Turn it on.

Apple users can access the Calendar app version and Online version on the browser as well. Alternatively, users can use it anywhere from any device.

Step: 3 – Restart PC and Check Again

Now, restart your Mac or PC and again

Go back on, iCloud pref and checked the Calendar checkbox [after Enable Calendar, System Restore all fresh file for iCal automatically]

Fix 403 Error On Add & Sync Google Calendar to Mac Calendar

Some mac users reported the issue “CalDAVAccountRefreshQueueableOperation” Returning 403 Error with Apple Kalender and GMail-Account”. Follow the below steps given in video guide after the “Clearing the cache explained in Step 2“

Use Online iCloud Calander on Browser

We have the Best Browsers for Mac, use any of them if you are facing issues with the online iCloud calendar with specific browsers like Safari, Chrome, and any other. Commonly, Problems on accessing apple calendar on the browser because of an Unsupported Extension installed on your System, VPN, Temporary blocked by the internet provider in rare case or Software as well.

Connect to Alternate Wi-Fi

If you’re using Safari to open the Calendar and iCloud feature on Mac, and it’s showing Error 403 on Google when searching through Safari, then try an alternate internet connection. A lot of users have reported this issue and already got rid of them by switching to Wi-Fi or reconnecting to alternate Wi-Fi.

Cellular Data on iPhone could show Error 403 on Calendar and iCloud, then also switching to Wi-Fi network would fix the problem.

Update Browser and MacOS/iOS/iPadOS

Browsing apps like Chrome, Safari, Firefox, etc. implements security policies to ensure the safety of end-users, the same is done from Apple’s end, maybe. Therefore, keeping the browsers and macOS, iOS and iPadOS would resolve this error 403.

To Update macOS,

If you’re using Safari on Mac, then updating the macOS is enough, as all the first-party apps automatically update when you update macOS.

1. Click on the Apple icon.
2. Select Software Updates.
3. Click on Update Now

To Update iOS/iPadOS,

1. Go to the Settings App.
2. Tap on General.
3. Select Software Update.
4. And Download and Install the software updates.

Reset All Settings

Whether an incorrect APN Settings, VPN Settings, or any random error, then Resetting All Settings will definitely fix this issue for you. This is applicable to the iPhone and iPad.

1. Open the Settings app on iPhone.
2. Tap General.
3. Tap Reset.
4. Select Reset All Settings.
5. Enter iPhone passcode and Reset All Settings.

That’s it.

I hope you found above solution helpful to fix the server responded with an error apple calendar 2021.

Feedback Report to Apple

Here’s the link to send feedback report about an error 403 on your device.

Now check your problem or fix the 403 error of Calendar and iCloud. You can contact us via text comment and if you’ve more problem or omission regarding fix 403 error of Calendar and iCloud. Like it? Share … and yeah,

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