Calendar sharing is not available with the following entries because of permission settings on your network

When attempting to share a calendar to another internal user using outlook 2010 you receive the error

Calendar sharing is not available with the following entries because of permission settings on your network

After deleting the nickname cache and choosing the name from the GAL you still receive this error. In this instance it was resolved using:

set-mailbox user1 -applymandatoryproperties


James Chong
MCITP | EA | EMA; MCSE | M+, S+
Security+, Project+, ITIL
msexchangetips.blogspot.com