Outlook Calendar Operation Failed - Please try to update your outlook client: When we attempt to open. Web outlook consistently giving operation failed messages when trying to edit an appointment in a shared calendar. Web the operation failed. The messaging interfaces have returned an unknown error. Web it shows an error prompt the operation failed when trying to open a shared calendar. Updated calendar permissions are not reflected and applied immediately. File > office account > update options > update now;
Please try to update your outlook client: The messaging interfaces have returned an unknown error. Updated calendar permissions are not reflected and applied immediately. Web outlook consistently giving operation failed messages when trying to edit an appointment in a shared calendar. Web the operation failed. When we attempt to open. Web it shows an error prompt the operation failed when trying to open a shared calendar. File > office account > update options > update now;