Whatever you do, nothing seems to make this pop-up disappear. The message just seems to remain there even after you click “ok.” It can be very annoying to receive this message, so you can learn how to fix it below.

It has been said that this error has persisted for years and that the calendar app is to blame. Whatever iOS device you have, these steps will still work.

Why Does It Say Your Response to the Calendar Invitation Cannot Be Sent?

The purpose for which you are receiving calendar information You’ve sent a response—accepted or rejected—to a calendar invitation, but due to an error, the notification about the invitation cannot be sent will keep appearing on your iPhone. As a result, you’ll keep getting it.

There might also be a problem with the calendar app and your mail account. Your response might not be delivered to the intended recipient if a bug or glitch corrupts the Calendar or Main app.

1. Your iPhone Isn t Up to Date

Your iPhone is not current. You might be missing out on some of the new features and improvements that iPhone has been downloading if your iPhone hasn’t received an update in a while. This may prevent the calendar application from operating entirely.

You can check to see whether an update is available by going to your settings. The next available version and whether you can update should both be indicated at the top.

2. The App Is Out Of Date

The application may not be current. If an update is required, it will typically appear on your phone’s home screen. The app image will be covered by a circular logo. It will therefore need to be updated. Check the app store for an update if it’s still not working.

How to Fix Your Response to the Invitation Cannot Be Sent

It’s courteous to accept or decline invitations when they are extended to you so that the sender of the offer knows if you will be able to attend.

Regardless of the option you select, the person who invited you will be informed and can then take the required action. Every time you accept or decline the invitation, your iPhone has a problem that prevents your response from being sent.

There is no way for the recipient to know whether you have denied their communication if your response to the calendar invitation couldn’t send. You’ll need to remove the bug from the Calendar app, Mail app, or your iPhone in order to resolve this issue.

You must solve the issue in order for your response to calendar invitations to be sent, even though the origin of the glitch is unclear.

1. Turn Calendar Accounts Off/On

This action must be taken if you recently responded to a calendar event for it to work. Your acceptance or rejection of a calendar invitation will be synced with your calendar so that you are notified of any upcoming activities.

Turning off and back on any calendar accounts is the first step you should take to solve any issues with your response failing to send. The calendar app will be refreshed as a result, which can prevent the notification from appearing.

1. Access settings

2. Select Calendar.

(3) Select Accounts.

4. Decide which account should be used to access the Calendar. iCloud or Gmail will be used for this.

Fifth, click Delete Account.

6. To confirm, select Delete from My iPhone. If you delete this account, your iPhone will no longer have access to its contacts and calendar.

7. Switch your device on and off.

8. Return and activate the calendar.

After completing this, you can check to see if the calendar invitation notice still appears. If the previous step didn’t succeed, move on to the next one.

2. Delete the Calendar app then Reinstall

The calendar application needs to be deleted and then installed once again. Despite being a pre-installed application, the Calendar’s cache files can still be removed. The app will still be there after deletion, but it will be removed from the home screen and its files will be deleted.

You must swipe left to look for the calendar app once you’ve uninstalled it. You’ll be able to reinstall the app from this point forward.

After doing this, you must wait a while to check if the message stating that your response to the invitation cannot be sent appears. You should observe that the message is no longer visible.

3. Turn Your iOS Device Off/On

This might be the cause of the issue because it’s happening on your iOS device. Your device can contain a bug that prevents you from responding to the calendar invitation that wasn’t delivered.

Restarting your iPhone or iPad is the second option to try if the previous one didn’t work. Your iOS device gets a fresh start when you restart it, which can get rid of bugs and flaws that are causing issues.

Go to settings > general > shut down to restart your device.

You must follow those procedures if you see the obnoxious pop-up. You ought to cease getting the notice once you’ve completed all the steps.

You can attempt to recover your device from DFU mode if you notice that it continues appearing. Although it requires extensive investigation, this phase typically resolves the most difficult issues.

4. Update iOS to the Latest Version

Numerous flaws are present in older iOS versions. Your iPhone or iPad may develop flaws and difficulties if you don’t actively keep it updated, which could result in the error message “Your calendar invitation cannot be delivered.” The next step you should take is to upgrade your smartphone if you have used every other option.

Using iCloud, back up your device.

2. Access General > Settings.

Three. Click Software Update.

4. Click on “Download and Install.”

5. Select Cancel or Continue.

6. Tap Install to begin the upgrade.

After you’ve installed the update, see if you can send an answer to the calendar invitation. If not, you’ll need to figure out what the issue is as it still affects your device.

5. Force Close Calendar App

You must force-quit the app if your calendar invitation still won’t go through. Any problems in the calendar app that would prevent your response to the invitation from being sent are fixed when you force exit the app. Apps might occasionally experience bugs, which can result in errors like the one you’re viewing right now.

If you’re using a device with a home button, you’ll need to double click it and swipe the Calendar app off to force the app to close. When using the calendar app on an iPhone 8 or later, you must first swipe the multi-task view off the bottom of the screen in order to access it. You may verify from here if your calendar invitation can be sent.

6. Check Your Internet Connection

Make sure your internet connection is linked properly by checking it. Your location and the objects around you could both be impacting your internet connection, among other things. For instance, if you are inside of a metal container, being in an elevator could significantly disrupt your connection.

7. Force Restart iPhone

To get the iPhone updated and functioning, you might want to try forcing a restart. To ensure that your iPhone can be refreshed, you might need to enable several functions before you can allow restart.

The steps to update an iPhone X and newer iPhones are listed below;

Open your iPhone, first.

2. Select Touch under Accessibility under Settings.

3. After selecting the AssistiveTouch, slide it to the on/green position.

4. Your screen now has an onscreen Home button. To see the options, tap it. Discover the Home options; from here, you can add a restart button.

The methods to enable Assistive Touch on an iPhone are now provided.

1. Select General from your Settings menu, then select Shut Down.

2. Tap the on-screen Home button on the shutdown screen.

3. Tap down and hold “Home” in the pop-up.

putting an iPhone to sleep with Assistive Touch.

1. Release your thumb from the screen when your iPhone reaches the home screen.

2. If your iPhone has a passcode, you must enter it on the passcode-entry screen. Your iPhone has just been updated.

8. Reset All Settings

To remove any settings that might be preventing your calendar app from functioning as it should, you might want to reset all of your settings.

To eventually reset your iPhone, go to Settings, select the General tab, and then choose Transfer or Reset iPhone.

When it comes to resetting, there are numerous options;

1. You can remove all of your iPhone’s data and settings by selecting Erase All Content and Settings.

2. Reset All Settings: This option removes or resets all settings, including those for the Apple Pay cards, the keyboard dictionary, location services, and privacy. No media or data will be removed.

3. Remove all network settings by selecting this option. Additionally, the manually trusted certificates are converted to untrusted, and the device name entered under Settings > General > About will be reset to iPhone. Additionally, cellular data can be disabled.

Remember that when you reset network settings, any VPN settings and previously used networks that weren’t deleted will remain. Wi-Fi will be disabled and then enabled again.

4. Reset Keyboard Dictionary: You add words to the keyboard dictionary by rejecting words iPhone suggests as you type. Resetting the keyboard dictionary erases only the words you ve added.

5. Reset Home Screen Layout: Returns the built-in apps to their original layout on the Home Screen.

6. Reset Location & Privacy: Resets the location services and privacy settings to their defaults.

9. DFU Restore

To DFU restore a phone most people say you have to turn it off, but you don t. DFU stands for Device Firmware Update, and it s the most effective and deep type of restore you can do on an iPhone.

On your device, you have to press and release the volume up button on the side, then quickly press and release the volume down button, and then press and hold the side button until the screen goes completely dark.

As soon as the screen turns black, press and hold the volume down button while continuing to hold the side button.

After 5 seconds, release the side button while continuing to hold the volume down button until your iPhone shows up in your iTunes or Finder.

As soon as it appears in iTunes or Finder, release the volume button. Your iPhone is now in DFU mode and it will alert you how much time it needs.

10. Factory Reset

A hard factory reset will erase all content from your iPhone. You will have to completely start over.

1. You can go to Settings, and then General and you will find either Transfer or Reset iPhone.

2. From here, tap Erase All Content and Settings.

11. Contact Apple Support

The final alternative may be to contact apple support to get a professional opinion on what you should do. Apple has an online help desk which provides both articles and live support from their headquarters. You can find the Apple support site atApple Support.


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