Unable to remove old users from calendar.

[Tkoeling]

Hello all,

I am currently having the issue that multiple users have "old" users (people not working in the company anymore) in their shared calendars or in "other calendars".

When trying to remove these, they get a message "the modified permissions cannot be saved".Outlook error

Can anyone advise me on what to do?

[#2]

Have you tried adjusting the permissions via PowerShell?