Rollback AD Schema upgrade for Exchange.

Question

I need a statement come from Microsoft site saying that there's no rollback after we have upgrade the AD Schema. I was looking for it for days but still didn't found any from Microsoft site, most of it are from the forum. Can someone help me on this?

Answer 1

Hi, The only way to rollbak is to restore a backup, which is a lot of work, and if you have multiple DC it can be an headache to do,

Answer 2

Hi @Nur Syakirah Mohd Soror

As @Philippe Levesque has said, schema updates are permanent and there is no method to delete an object or attribute added to the schema. There is an option to defunct an attribute but it still exists and is still part of the schema.

The only way to remove schema change is to do a full AD forest restoration.

https://learn.microsoft.com/en-us/windows/win32/ad/disabling-existing-classes-and-attributes

Gary.

Answer 3

Hi NurSyakirahMohdSoror-9790,

AD Schemas cannot be rolled back. You would have to recreate the entire forest.

Here is a best practice document:

https://techcommunity.microsoft.com/t5/core-infrastructure-and-security/best-practices-for-implementing-schema-updates/ba-p/255611

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