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Thursday, August 10, 2006

Exchange: Free/Busy Not Available After Mailbox Move


After migrating mailboxes to another Exchange server, Free/Busy information may not be available. Viewing this user's Free/Busy, produces slashes with no information.


Try running Outlook.exe /cleanfreebusy first. If you moved the mailbox across administrative groups, you will need to use the Exchange Profile Update Tool which you can download here If you are also trying to query free/busy information from users across sites, try putting a local replica of that site's free/busy. If all fails, try deleting the PR_FREEBUSY_ENTRYIDS for the affected users MB using MFCMAPI.

Download MFCMAPI

1. Download MFCMAPI, also known as MAPI Editor.

2. Launch MFCMAPI application. Click OK at the Microsoft Exchange Server MAPI
Editor window. Click Session, and select Logon and Display Store Table.

3. You will now be prompted to create a profile. Note, you must be logged in
with an account that has full rights to your Exchange server, otherwise you will
receive the following error message below when we open the temp table.

File f:df7830extestsrcmfmapimapistorefunctions.cpp

4. Once logged in, click MDB, and select Get Mailbox Table. A new window display
opens "Server Mailbox Table" From here, you can select the server name you wish
to work with. Select default settings and click OK.

5. You will now see all mailboxes enumerated. You will need to locate the user
that whos Free/Busy is not available.

6. Once you have double clicked the mailbox, highlight Root Container.

7. In the right pane, locate PR_FREEBUSY_ENTRYIDS, right click and select
Delete Property.

8. Expand Top of Information and highlight Inbox.

9. In the right window, if there is a property name of PR_FREEBUSY_ENTRYIDS,
right click on it and choose Delete Property

10. Exit out of MAPI Editor.

11. Go to start run, Outlook.exe /cleanfreebusy on the mailbox

James Chong
MCSE |M+, S+, MCTS, Security+

How useful was this article? Want to see a tip not listed? Please leave a comment.


Anonymous Trenton Van Vickle said...

Took me a few minutes to get a feel for the mfcmapi tool but it worked like a champ. Thanks for posting this.

3:36 PM  
Anonymous Pete said...

Great Article...Thanks for posting this.

3:33 PM  
Anonymous Rob M said...

Able to use this to fix a user. Worked perfectly.

6:42 AM  
Anonymous Anonymous said...

didnt work for me. anything else i can try?!

4:35 PM  
Anonymous Anonymous said...

Did not work for me. I could not find it under "top of information store"
When i start outlook with /cleanfreebusy i receive failed to clean local data. When i create a calendar item i still receive a free/busy error.

5:46 AM  
Anonymous Anonymous said...

Sorry, above comment was mine.. but i had to look in INBOX,.. when i deleted the key there everything worked fine! THX

6:29 AM  
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6:20 PM  
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6:48 PM  
Anonymous Anonymous said...

I did the steps and it didn't work for me. I'm using Exchange 2010 and Outlook 2010. Is there anything else I can check?

5:59 AM  

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