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Unable to open Shared Calendar in Outlook 2007 and Exchange 2010

tkmluv asked
Medium Priority
Last Modified: 2012-05-11
We recently migrated Exchange from 2007 to 2010 and any users that were created after the migration, we are unable to open up their calendar. I have added myself to the Full Access Permission list and am still unable to open up their calendar.

The error we are getting is: "You do not have permission to view this calendar. Do you want to ask User Name to share his or her Calendar with you?"

If I add this users mailbox to my profile, I get the "Cannot expand this folder" error.

We are running Exchange 2010 SP1 (Build 281.15)
Outlook 2007 SP2 (12.0.6545.5004)
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I would start by running an EXBPA report to see if it detects a permission issue


It did come back with an issue of a permission inheritance block on the Exchange Domain Servers group. I fixed the error and re-ran the EXBPA Permissions scan and it was clean but I am still unable to access the calendar/mailbox.

I ran a Health Check and the only thing that I see that may be causing this issue is it is telling me that the MailBoxRole is partially configured. This server has been running for 3 months with no problems.

And for some reason the "First Administrative Group" is still showing up. (see attached)
Did you tried using the option "Open a Shared Calendar" link from the calendar folder\menu @ Outlook?

If needed follow the rest sequence of asking and granting permission with the other user (shared calendar)


Yea, we have done that. The thing is I have access to all mailboxes and we only have a problem accessing the calendars/inbox of users created after the Upgrade to 2010 that are having this problem.
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After some searching brought on by the above comments, I found the solution myself.
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