Unable to open Shared Calendar in Outlook 2007 and Exchange 2010

Posted on 2011-04-22
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)
Question by:tkmluv
    LVL 32

    Expert Comment

    I would start by running an EXBPA report to see if it detects a permission issue

    Author Comment

    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)
    LVL 26

    Expert Comment

    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)

    Author Comment

    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.
    LVL 26

    Accepted Solution

    Did you tried adding some reviewer permission @ the mailbox level too?

    I remember that along with the folder-permission we need to add some more permission @ mailbox too.

    Assisted Solution

    The thing is I am able to add the Full Access Permission in EMC to any account and able to access them just fine just not accounts created after the upgrade.

    After some searching I was able to get it working with the following command in the Exchange Management Shell

    Add-PSSnapin Microsoft.Exchange.Management.Powershell.Admin -erroraction silentlyContinue
    $userAccounts = get-mailbox -resultsize unlimited
    ForEach ($user in $userAccounts)
    add-MailboxPermission -identity $user -user “Domain Admins” -AccessRights FullAccess

    Open in new window


    Author Closing Comment

    After some searching brought on by the above comments, I found the solution myself.

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