Hi,
Please check shared calendar via OWA, If OWA show right shared calendar, we confirm this is client problem. Try following steps troubleshoot issue:
1. Change cache mode to online mode. The problem is likely caused by a bad item synchronized to the user's cached mode .ost file. Then that results in the whole calendar to be blank.
2. Disable caching of shared folders.(Tools – Email tab – Change – more settings – advanced – click to clear the Download Shared Folders)
3. Recreate outlook profile to check the result.
Thanks.
Tony Chen
TechNet Community Support
