Thursday, May 7, 2015

Extend the Active Directory schema for SCCM

To extend the Active Directory schema using ExtADSch.exe
1. Create a backup of the schema master domain controller’s system state using the NTBACKUP utility. To start the NTBACKUP utility, click Start, click Run and type ntbackup.

2. Ensure that you are logged on to the schema master domain controller with an account that is a member of the Schema Admins security group.

NOTE: You must be logged on as a member of the Schema Admins security group in order to successfully extend the schema. Running the ExtADSch.exe file using the Run As command to attempt to extend the schema using alternate credentials will fail.

3. Run extadsch.exe, located at \SMSSETUP\BIN\I386 on the installation media, to add the new classes and attributes to the Active Directory schema.
4. Verify that the schema extension was successful by reviewing the message in command window and also extadsch.log located in the root of the system drive.

5. If the schema extension procedure was unsuccessful, restore the schema master's previous system state from the backup created in step 1. This will reverse the schema extension actions before reconnecting the schema master domain controller to the network

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