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KB 822444 - Reset system folders in Exchange 2003

Posted on 2006-05-12
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I've inherited an Exchange 2003 box that is showing various errors in the Application Event Log and I'm trying to clear them up one by one.

Specifically one I've researched - "System Attendant Service failed to create session for virtual machine SERVER-NAME. The error number is 0x80090005."

seems to point to this solution:  http://support.microsoft.com/kb/822444/  and also here: http://www.experts-exchange.com/Networking/Email_Groupware/Exchange_Server/Q_21311295.html

However, in the EE response I also read this: "The only thing you will lose is free/busy information, which can be repopulated by sending meeting request to all the users and ask them to accept it.   And you will lose Public Folders previous backups, so after going trough the hole [sic] process make sure you make a new one."

I'm confused as to what I'll lose in regards to Public Folders.  Make a new one .... ?  

I guess I'm a little hesitant to make the edit in ADSI unless I get a warm fuzzy that I won't lose Public Folder information aside from the Free/Busy info, which I can live with.

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Question by:kniterati
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Exchange_Admin earned 500 total points
ID: 16669118
"And you will lose Public Folders previous backups, so after going trough the hole [sic] process make sure you make a new one."
What this means is that you need to make new backups of your Public Folder store since it has changed.
System folders are stored in the Public Folder store.
Since you recreate these using GUIDGEN your past backups will only cause the problems to return if you restore the backup.
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by:kniterati
ID: 16669190
EDITED TO ADD:

So from what I understand if I reset the GUID

1) All Free Busy data will be lost (since this is missing, that is OK).
2) All Offline Adrress books will be destroyed.
3) All previous backups cannot be used as the system folder GUID will not match so they will be automatically destroyed.

Will there be any loss of existing access/data aside from those described above?

Basically, I should make sure that backups run tonight ;)
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Author Comment

by:kniterati
ID: 16669198
Ok, that's what I thought, but I wanted to get a sanity check.  Thanks!
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