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DS Schema warnings, event 1153 when extending the schema for Exchange 2007

I am getting many DS Schema warnings, specifically event 1153 when extending the schema during preparations for installing Exchange 2007. Is this normal?

Example:

Source: NTDS General
Category: DS Schema
Event ID: 1153
User: NT Authority\ANONYMOUS LOGON
Discription: Internal event: The following schema class has a superclass that is not valid..
Class identifier:
2098430887
Clan name:
ms ExchOWAVirtualDirectory
Superclass identifier:
2098430860

Thank you for your help and time in advance.
0
VLG33K_NY
Asked:
VLG33K_NY
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2 Solutions
 
abhaighCommented:
this should help

Event ID 1153  Schema Operations
http://technet.microsoft.com/en-us/library/cc756675.aspx
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VLG33K_NYAuthor Commented:

not much help there. only replication and restoration of AD... so I replicated and I do not see the errors... the only other way to tell is to check the existence of the attributes and classes using the adsi util..

Any ideas?
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VLG33K_NYAuthor Commented:
This arcticle explains how to double-check yourself when extending the schema and prepairing the AD.
Also, based on the information and processes there are described here, I was able to successfully confirm my operations, which were a success after the next round of replications. Good job Neil and thank you for the efforts in publishing this article on msexchange.org.

http://www.msexchange.org/articles_tutorials/exchange-server-2007/migration-deployment/closer-look-preparing-active-directory-exchange-2007-part1.html

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VLG33K_NYAuthor Commented:
Found resolution.
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