Calendar Already exist

[Shilton26]

Hello,

I've been trying to add a calendar on outlook web for one of our users & getting "Calendar already exists" Error. It's not on the list of calendars/remove calendar list

have tried removing users permission to the sahred mailbox & re-adding after 24 hours, however the issue still remains 

https://techcommunity.microsoft.com/t5/outlook/this-calendar-already-exists-when-adding-calender-fro...

It works fine on outlook app. I have also tried this with a second user but getting the same error

I can add it to the admin outlook web. it's just the users that are affected

has anyone come across this issue & managed to fix it? 

Any help will be appreciated 

Thanks 

[#2]

I'm having the same problem. I can add most people, but not one co-worker. I get the "This calendar already exists" message, but the calendar is clearly not there. It's not in the "Edit my calendars" section either.

[#3]

@lissa2882 Afternoon :)

I removed all of the Calendars listed in "Other Calendar's" and "People's Calendars" and tried again and it worked for Me.