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Exchange Schema

Posted on 2013-11-02
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Last Modified: 2013-11-05
I have a client who recently decided to migrate from GroupWise to Exchange 2013.  During the course of the roll-out a few glaring compatibility issues became apparent and they decided to remove Exchange 2013.  They are actually having problems even doing that, but that is another post.

The question is...  Now that the AD schema has been extended for Exchange 2013, can they install a clean Exchange 2010 server in their environment or has the damage been done?  There are no other Exchange servers in the environment.
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Question by:JadedFan
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Expert Comment

by:Manpreet SIngh Khatra
ID: 39618625
If you have SystemState backup you can roll back and then work on it :)

http://social.technet.microsoft.com/Forums/exchange/en-US/fd7d8115-8afc-473e-8416-b2b4d60f87ff/exchange-2010-in-a-exchange-2013-environment?forum=exchangesvrgeneral

Edit: Also if you never had an Exchange 2010 server in this organisation before, then installing Exchange 2010 after upgrading the schema to 2013 is not supported.

- Rancy
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Author Comment

by:JadedFan
ID: 39618637
Is there a way to roll back the schema extension with out a system state or authoritative restore?  This client's idea of backups is to use Double-Take so a System State may not be available.
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Accepted Solution

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Manpreet SIngh Khatra earned 1500 total points
ID: 39624321
Without Auth-restore from System state backup you cant revert the Schema

- Rancy
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Author Comment

by:JadedFan
ID: 39624486
Thanks to all for your answers.  We successfully rolled-back the schema, Installed EX2010 and are rockin'.
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Author Closing Comment

by:JadedFan
ID: 39624494
Authoritative restore was not needed.
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LVL 52

Expert Comment

by:Manpreet SIngh Khatra
ID: 39624646
Wow .... if you ever had Exchange 2007 or 2010 earlier than there wouldnt be issues, without that would surely be eager to know how it was done :)

- Rancy
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