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Exchange 2007 Logon Problems & Replication Failure with USN Rollback

Posted on 2010-01-06
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Hi all,

I have a major problem with Exchange 2007 SP2 running on Windows 2003 R2.
The Exchange 2007 Installation is a VMware 3.5 guest and was done on a DC (Not the operations master). A week ago  the VM was corrupted and as a result we restored from a backup of the VM with the unintended consequence of an old System State and causing replication to fail. This is also known as USN rollback.

http://support.microsoft.com/kb/875495

http://elssblog.blogspot.com/2006/06/recovering-from-usn-rollback.html

http://utools.com/help/UsnRollback.asp

OWA users are unaffected but Outlook client users can no longer logon.

If I run DC promo on this Exchange 2007 SP2 VM and demote it will it fix the problem or just make things worse?
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Question by:the-waves
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Author Comment

by:the-waves
ID: 26190604
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Akhater earned 2000 total points
ID: 26190648
This is why exchange is not supported on a DC

To be honest I have never installed exchange 2007 on a DC but in exchange 2003 DCpromo out the DC used to break exchange totally. so I wouldn't try this in a production environment to start with.

Can you install another exchange and move the mailboxes to it /?
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Author Comment

by:the-waves
ID: 26190745
I almost got there!

I set up another EX07 server but it failed installing the mailbox role. It now throws a 4001 error when I try and start the Exchange SA!
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Author Comment

by:the-waves
ID: 26191606
I just ran the fix mentioned in my first comment and it looks like it has worked -  I will leep you all posted but I am optimistic.
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by:the-waves
ID: 26191618
AKhater - would you recommend demoting this Server to remove the Global catalog?
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by:Akhater
Akhater earned 2000 total points
ID: 26192767
if your server is now working and it is back acting as a "normal" DC then follow your pursuit in building another exchange and moving the mailboxes to it.

I will do some research if it is same to dcpromo out a DC installed on exchange 2k7. I know for sure on 2k3 it used to break it and exchange 2k7 is not support on a DC it won't even install if it is not in the root forest
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by:Akhater
Akhater earned 2000 total points
ID: 26192801
A quick search seems to confirm that DCpromo will break exchange 2007 too

http://mostlyexchange.blogspot.com/2006/12/dcpromo-and-exchange-2007-dont-do-it.html
http://forums.msexchange.org/m_1800449918/tm.htm


I have 2 ideas in mind and the safer is to build another exchange move the mailboxes to it and then uninstall the one on the DC
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by:the-waves
ID: 26201993
Hmmm, not having alot of luck there!

In the meantime I need to recover some important email for users.If I can recover the entire Exchange folder from the old server is there any way of getting the mail off?
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Expert Comment

by:Akhater
ID: 26204587
what is your current status ?

did you try to install another exchange server?
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Author Comment

by:the-waves
ID: 26206153
I did - but it failed at the mailbox role and the SA won't start!!!
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Expert Comment

by:Akhater
ID: 26208141
ok maybe we can work on that

what is the error ?
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Author Comment

by:the-waves
ID: 26290272
Hi AKhater,

Thank you very much for your input. I am afraid the situation was unworkable and time was of the essence so we have moved to a hosted Exchange solution. We will be decommisioning (or trying to) the Exchange server in the coming weeks and I would certainly appreciate your input on that topic.

Thanks again!
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