Error Msg - "Calendar Invitation"

I am on a corp server so they were gone for about 30 minutes and then my calendar started syncing with my server. I had all my calendar stuff back within about 45 minutes and the error message doesnt pop up any longer. Seemed to work just fine. Easier fix than what the Apple tech i had on chat wanted me to do. He was ridiculous. Hope this works/worked for you

The Above worked for me too!

Settings>Calendar>accounts

Select the account you believe is the problem ( I have several so u can select them all)

Turn off calendar (repeat w the other ones),

Turn off /start your phone

Turn your calendar/s back on

I tried it an hr ago and so far no more pop up notifications , I even tried sending an invite and replying to other and had no issues.

Hello,

Does anyone know why this keeps happening? I've had to go through this 'work around' several times over the last few months. Is there a permanent fix planned? Or something else? Do I need to look for the culprit in my email and contact that person who is doing something wrong?

Thanks much!

Having the same issue since the upgrade. I may have recently sent an invitation reply. I accept invitations all the time. Haven't seen any suggested fix yet in this thread. Any suggestions?

Hello,

I have the same issue since the update, can we please keep this post alive until Apple responds?

This problem is easily remedied by deleting and re-installing your exchange account. Poof gone!

Have the same issue in iPhone 7. I think more often than every 5 minutes. I use calendar invites all the time send and receive since the update pop ups keep coming with the same message

Thanks Tumail - have a iPhone 6 connected to our corp MS Exchange server. Followed your steps for the Exchange account ...no error message for 2 hours now. Cheers

I did the suggested fix twice and it came right back. Apple is going to have to fix this. ASAP.

Same problem here with my iPhone 7. Previous suggestion to turn off calendars doesn't work unless you are ok with deleting the calendars from your iPhone.

Thanks! This was a simple fix and it worked!!!!