How to Fix Calendar Invitation: Your Response To The Invitation Cannot Be Sent Issue

Have you been experiencing a constant message prompt from your Calendar app lately?

 

 

The frustrating part is even if you tap the OK button, it pops up back again a minute later and it never stops. Thankfully, we have managed to come across a couple of working, effective solutions to circumvent this issue and managed to test it out for ourselves.

This guide will guide on how you can do the same, step-by-step and get this Calendar app issue fixed in no time. 🙂

Without further ado, let’s dive right in!

 

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TABLE OF CONTENTS

1. Force Close All Applications and Re-open Calendar App
2. Refresh the Calendar App and Force Restart Device
3. Update iOS or iPadOS to the Latest Version
4. Refresh Calendar Account Settings
5. Reinstall the Calendar App
6. Reach Out to Apple

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How to Fix “Calendar Invitation: Your Response To The Invitation Cannot Be Sent” Issue: 6 Ways

 

1. Force Close All Applications and Re-open Calendar App.

When a device such as your iPhone or iPad runs too many apps at once, it can incur a loss of processing power and have limited memory space.

In order to get around this, you will need to recalibrate the app priorities of your Apple device which involves clearing up all the running applications from your device and then relaunching the Calendar app.

Here’s how you can do it:

For iPhone X or later, iPad with iOS 12 or later, or iPadOS

1. From the Home screen, swipe up from the bottom of the screen and pause slightly in the middle of the screen.
2. Swipe up on the app’s preview to close the individual app. Do this to all the applications.
3. Find the Calendar app on your Home screen and tap to relaunch it.

 

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For iPhone 8 or earlier versions

1. Double-click the Home button to show your most recently used apps
2. Swipe up on the app’s preview to close the individual app. Do this to all the applications.
3. Find the Calendar app on your Home screen and tap to relaunch it.

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Now that you removed the excessive number of apps which may have been running in the background, you can try once again to see if the Calendar app issue has been fixed. This can be a temporary fix for some, yet if the issue still remains, the next method might be able to fix it.

 

 

2. Refresh the Calendar App and Force Restart Device.

Another really effective solution is to disable your Calendar app first before trying to force-restart your device. This method is useful as it completely resyncs the Calendar app to your device ensuring that the Calendar app is working the way it is intended.

In order to disable your Calendar app, you can simply go into your iPhone or iPad’s Settings app, tap your Apple profile (top), then tap iCloud, and then tap the Calendar app’s button to disable. You will be prompted with a message, which you just need to select Delete from My iPhone.

 

Once you’ve done that you can go ahead and proceed to restart your device like you normally would. You can easily achieve this by going to Settings, then tap General and then tap Shut Down.

However, if your Apple device is frozen or having slow performance issue, you can always do a force restart.

According to Apple Support, here’s how you can do it:

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For iPhone X or 11

1. Press and hold both the Volume button and Side button until the power off slider appears.
2. Drag the slider button to Turn Off direction, then wait until the screen turns black for about 30 seconds.
3. Press and hold the Side button until you see the Apple logo to turn it back on.

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For iPhone 8, 7 or 6

1. Press and hold the Side button until the power off slider appears.
2. Drag the slider button to Turn Off direction, then wait until the screen turns black for about 30 seconds.
3. Press and hold the Side button until you see the Apple logo to turn it back on.

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For iPhone SE, 5 or earlier versions

1. Press and hold the Power button until the power off slider appears.
2. Drag the slider button to Turn Off direction, then wait until the screen turns black for about 30 seconds.
3. Press and hold the Power button until you see the Apple logo to turn it back on.

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For iPad with Face ID

1. Press and hold the Volume button and the Power button until the power off slider appears.
2. Drag the slider button to Turn Off direction, then wait until the screen turns black for about 30 seconds.
3. Press and hold the Power button until you see the Apple logo to turn it back on.

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For iPad with Home button

1. Press and hold the Power button until the power off slider appears.
2. Drag the slider button to Turn Off direction, then wait until the screen turns black for about 30 seconds.
3. Press and hold the Power button until you see the Apple logo to turn it back on.

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Once you’ve force restarted your device, go back into the Settings app of your Apple device, tap [Your Device Name], then tap iCloud, and then toggle the Calendar app’s button to enable it.

By disabling the Calendar app first, restarting the device and then re-enabling the Calendar app, you will allow the app to remove any corrupted conflicts or errors that may have been plaguing your device.

 

3. Update iOS or iPadOS to the Latest Version.

This is perhaps one of the more overlooked solutions in order to ensure apps like the Calendar app work how they should.

Whenever you are running an older version of the operating system (iOS/iPadOS) in your Apple device, you’re setting yourself up to encountering various issues and unsupported patches which may have already been rectified with a newer version. Moreover, it is also important to understand If the OS is outdated, then it’s highly likely that there is a conflict with the updated version of the Calendar app as it is an Apple stock app.

So to ensure that most bugs are fixed, be sure that you updated your Apple device to the latest version. Here’s how you can do it:

1. Be sure to back up your Apple device using your iCloud or iTunes. Learn more about backing up your Apple device.
2. Plug-in your device into power and connect to a stable Internet connection via Wi-Fi to avoid interruption.
3. Now open the Settings app, then tap on General.
4. Next tap on Software Update.
5. On this page, you will want to give it a few minutes to check if any updates are pending to be downloaded. If there is, tap Download and Install. If a message asks to temporarily remove apps because iOS needs more space for the update, tap Continue or Cancel.
6. To update now, tap Install. You also have the option to select for later by choosing Install Tonight or Remind Me Later. If you tap Install Tonight, just plug your iOS device into power before you go to sleep. Your device will update automatically overnight.
7. Enter your passcode if applicable.

 

If you need more space for a wireless update, you can update using iTunes or delete content manually from your device. Whether you use iTunes or update wirelessly, you’ll have the same amount of free space on your device after you update.

Once you’ve updated your iOS (or iPadOS if you’re on an iPad), try opening the Calendar app once again and see if you’re able to resubmit your response to the invitation.

 

 

4. Refresh Calendar Account Settings.

When we tried the solutions in this guide, this was the solution that had fixed the issue for us.  The solution directly addresses the fact that it may be a result of a data mismatch between your Calendar app and the application server. Since the data sending process is often a two-way process between your device and the server, we cannot rule out the fact that there may have been some part of the process that got interrupted which leaves any response or action that you take to not get carried out.

Hence to fix this, you need to clear up your calendar app data and have a fresh copy of data from the server itself.

Here’s how you can do it:

1. Go to Settings, and then Passwords & Accounts option.

 

2. In the accounts section, select the account that is linked to your Calendar app. If you have multiple accounts, you can repeat the next steps to your other accounts. If you know the particular account that is causing this error, you can choose to proceed only with that account.

 

3. Toggle the Calendars button of the account to turn it off. A confirmation message of “Are you sure you want to continue? All calendars will be removed from your iPhone” will appear. Tap Delete from My iPhone to confirm the process. Don’t worry; your calendar data will be downloaded again from the server.

 

4. Go back to Settings, then tap General and then tap Shut Down. You may also refer to Method 2 of this guide to do a force shut down on your Apple device.

 

5. Turn back on your Apple device.
6. Go back to Settings, then Passwords & Accounts option, and turn back on the calendar of your account(s). Depending on the amount of data, It will take several minutes to sync and recover all Calendar data from the server.

Now that you have carried out the above steps, the Calendar application should now run without any errors. It is also a good idea that once you’ve completed this solution, you follow up with the next method of reinstalling the Calendar app once again to really have the fixes take effect.

 

 

5. Reinstall the Calendar App.

If you tried the solutions above and you’re still seeing no immediate results, then it’s recommended that you reinstall the Calendar app and then test it out. Now take note that you will not lose any of your Calendar app’s data which includes your appointments, scheduled meetings, reminders, etc as those are directly tied to your account which you have linked to your Calendar (see Method 4).

Here’s how you can do it:

1. Find the Calendar app icon on your home screen and touch and hold the app lightly until it jiggles. If the app doesn’t jiggle, make sure that you’re not pressing too hard.
2. Tap (x) button on the app, then tap on Remove.

 

3. To reinstall the app, go to the App Store.
4. Search for the Calendar app.

 

5. Reinstall the Calendar app.
6. Wait for the app to restore, then open it from your Home screen.

 

With a fresh copy of the Calendar app, you can use the Calendar app like it was new. Make sure to sync it with your account to get all your calendar data back.

 

 

6. Reach Out to Apple.

If you are having a hard time carrying out the methods above or you find that none of the methods above work, then you may reach out to Apple with their repair services at your nearest Apple store.

 

On the contrary, if you were able to do the methods above and still have not fixed the issue, then the Apple-certified technician might be able to fix it by doing a restore your Apple device in DFU mode. In which case, they can provide a fresh copy of the device firmware to wipe out the system error. Be sure that you have a backup of your Apple device before you proceed so you can restore it after the process.

If you don’t have an Apple Store near your place, you can check for the support options that are available in your area. If software issues like this occur, it is better to check for bug reports or call Apple Support for further details. If you are an advanced user, you can even file a bug report to the Apple Developers if you can prove that the app is indeed buggy.

 

 

Before closing this article, we would like to thank you for considering us as one of your trusted references. We hope that the “Calendar Invitation: Your Response To The Invitation Cannot Be Sent” issue on your Apple device has been resolved. If you have other questions, please feel free to leave a comment below.

 

If this guide helped you, please share it. 🙂