Forum Discussion
Problem with Shared Callendar in Outlook
I have hybrid Exchange in company A (exchange 2016). I have created sharing calendar information beetween company A and company B. From company A I can check the availability of calendars of people from company B, but not all of them. From Outlook in Windows, when I try to check availability callendar of some people from company B, I receive no information. For all the people I add after these people (even from company A), I no longer receive information about the availability of the calendar. Once I remove the problematic person, I can check other people's calendars.
The problem does not occur from Outlook on the Web or from MS Teams or NewOutlook - everything is OK. The problem only occurs with Outlook on Windows (version 365). How to solve the problem with checking calendar availability from Outlook in Windows?
2 Replies
Right-click on the shared calendar in Outlook → select Permissions → ensure that the user has editing permissions, and run outlook.exe /resetfolders to refresh the cache.
There was a problem with the classic Outlook API. Due to the specific configuration of the user's calendar, the API was returning incorrect data. The API for the new Outlook returned information correctly (the new Outlook uses a different API). Microsoft has improved the API, and the data is now returned correctly.
