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Exchange 2007 & Outlook 2007 Calendar Free/Busy Issue

Running Exchange 2007 and Outlook 2007 on Windows XP clients.

Three users in my organization receive this error message when trying to open appointments on another user's calendar:

Cannot open this item.  Cannot open the free/busy information.  Cannot locate the recurrence information for this appointment.

I checked the latter's permissions on his calendar and he has delegated the following permissions:

User 1 - Reviewer; Read - Full Details
User 2 - Editor; Read - Full Details
User 3 - Reviewer; Read - Full Details

If the "Read" permission setting controls access to Free/Busy information, then I don't see why all three users can't view calendar items.

Thoughts?
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snoopfrogg
Asked:
snoopfrogg
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1 Solution
 
CompanionCubeCommented:
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CompanionCubeCommented:
Another suggestion...

The problem was caused by a couple of appointments that were probably
corrupted.
I discovered it using the following procedure:

1. Backup all the appointments, and start Outlook without cached mode.
2. Create a temporary calendar folder.
3. Move all the appointments to the temporary folder.
4. Test if you can start Outlooku using the /cleanfreebusy switch.
5. If you can, move half the appointments and do step 4 until you find the
problemtaic "Half", then try to find the problemtic appontments and delete
them.

In my case it was 2 reaccuring appointmnets that caused the problem.


http://help.wugnet.com/office/free-busy-problem-user-Outlook-2007-ftopict1122135.html
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badgermikeCommented:
you could also try using the /cleanfreebusy switch on the computers that have issues. Close outlook, go to start, run, and type in outlook.exe /cleanfreebusy. You may have to run on 3 clients plus the one who's calendar info you can access properly.


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snoopfroggAuthor Commented:
CompanionCube - Thanks for the suggestions.  In your second suggestion, how did you identify the appointments that were causing the problem?

badgermike - I ran outlook /cleanfreebusy successfully on the three connecting workstations.  I receive an error, though, when I run the command on the workstation where the mailbox hosting the calendar is opened.  Is there something I can do to allow me to run the outlook /cleanfreebusy command successfully on this workstation?
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badgermikeCommented:
What is the error you are getting when running cleanfreebusy on the hosting hosting station?

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CompanionCubeCommented:
Please provide the error description and any EventIDs
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snoopfroggAuthor Commented:
badgermike - I won't have access to the hosting workstation again until Monday.  I'll try the /cleanfreebusy switch then and reply with the error message.

CompanionCube - The error description is listed in my original post.  No event log entries are generated when the affected users attempt to view the calendar.  In your second suggestion, how did you identify the appointments that were causing the problem?
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CompanionCubeCommented:
4. Test if you can start Outlook using the /cleanfreebusy switch.
5. move/remove half the appointments and repeat step 4 & 5 until you run Outlook without issue
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snoopfroggAuthor Commented:
badgermike - When I run the outlook /cleanfreebusy command on the hosting workstation, I receive a pop-up with this error message:

Cannot clean your free/busy information on the server.
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snoopfroggAuthor Commented:
CompanionCube - Your second suggestion allowed me to solve the problem.  The user had a corrupt reoccuring calendar entry that was causing the trouble.  I deleted it and all is well.
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