Outlook Calander Free/Busy not updating for few Users (all users sharing the same setup Exchange setup)

 

Problem Statement: – Scheduling a meeting request using Scheduling Assistant, few users Free/Busy information were not updated. All other users Free/Busy information was updated.

All users are in O365 and sharing the same Outlook version (Microsoft Office 365 ProPlus) with Windows 10.  Tested with some other user account all Free/Busy works fine. No major issues found only meeting organizer had the issue.

Solution:- Empty Auto-Complete List
Few ways of deleting this cache, U can remove all cache entries by using below method OR,

OR you can delete One by One using this method.

Thanks
@Roshan