I have a new SBS 2008 server with Exchange 2007 on it. I have about 50 users, of which 10 or so can't share their calendars, and other users can't open them. Specifically, the problem user opens his own calendar in Outlook, and the "Share my Calendar..." link is not there. Likewise, a functional user, goes to his Calendar in Outlook, hits the "Open a Shared Calendar..." link, enters the problem user's name, he gets an error "Unable to display the folder". I've checked the permissions of the problem users' Calendars in PFDAVAdmin (I give "editor" rights to the all-inclusive user group here), I see no difference between the functional users and the others. I just scanned my Information Store for corruption with IsInteg, fixed nothing. However, three of the ten problem users' Calendars seem to have fixed themselves, and everybody can open their calendars now. Any ideas? PS: The domain administrator can't open the problem users' calendars in Outlook either, and it has Manage Full Access permissions for every mailbox. Seems like it's not a permissions issue, in that case, no? Thanks!

First - domain admins should be blocked from having full mailbox access by default, therefore the permission issue with that account isn't really an issue. If that isn't the case then someone has hacked around with the permissions on your server to remove that inheritance. The first thing I would check is that permissions are inheriting correctly. You will need to do that with ADUC. On the security tab ensure that inherit permissions is enabled. Check the user's account through OWA that there is content in place. Check the user accounts are not delivering email to a PST file - that is the most common reason for the link being missing. If it is, then you will need to change it and import the information. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources

I have my administrator user set to have Manage Full Access to all users' mailboxes, for convenience's sake. That way, I can open anybody's mailbox with Outlook on my computer without any hassle. I checked ADUC and don't see any security tab. Perhaps I'm looking in the wrong place? All the users have calendars on the servers, so there's definitely content there to share. I'm pretty sure nobody is using PST files, but even if they were, I don't see how that would make a difference. I've opened their calendars with Outlook at my end with Outlook, and tried to share the calendars, and it doesn't work.

Sorry about the formatting, all my paragraphs are merged into one, for some reason...

The security tab may appear if you enabled Advanced Features in ADUC on the View menu. I personally don't agree with any account having access to all mailboxes by default. It is not a permission I need or want to do my job correctly. I don't want it so I don't have to prove that a problem with data leaking or going missing wasn't me. I don't need it because if I need to get access to a mailbox I grant myself the permission on demand. With correct auditing that permission change is logged, and then when I remove the permission, that is also logged. If people were having email delivered to a PST file, then you don't see the share the calendar links because you cannot share content that is being stored in a PST file. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

OK, I found the Security tab in ADUC, all the problem users are inheriting their security. Like I said, I'm doing all the configuration on my own station, with no PST involved at any point. Would it make any difference if the user has a .pst file on his station? I can't see that from where I am (remote site). If it does, is there any way to tell that from the server? Otherwise, I'm just guessing here.

The presence of a PST file will not break this functionality - it is the delivery location being set to the PST file that is the most common cause. However if you aren't using Personal Folders as the delivery location then it is probably something else. Could be one of the add ins for Exchange that is missing or not enabled in Outlook. You would have to compare a working system with a non-functioning system. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

Well it's all the same system, assuming you mean computer. I'm doing the testing on my computer, for functional calendars and non-functional ones. Anyway, I'm going to try a new tactic: delete the users' mailboxes then recreate them. I was trying to avoid that, but users are getting fed up and my antipathy towards the Exchange PowerShell is being eclipsed by my desire to keep the peace around here. Thanks for your help, just the same.

Did you try it at the Outlook level? I was able to share contacts from client-to-client.

Yes, it wouldn't let me share calendars in Outlook.

Try this: http://technet.microsoft.com/en-us/library/cc743438.aspx.

Yeah, I know how to share a calendar already, thanks.

Hi Steve, When you say the link is missing, do you mean the "Share Calendar" button is actually not present? Can the affected users share their calendars via Outlook Web Access? Have you tried running Outlook /resetfolders with Outlook configured to connect to the affected user's mailbox? This restores default delivery location for missing folder links (which came to mind after reading Simon's post) Thanks, Kevin Ca - MSFTKevin Ca - MSFT