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Community Member

Unity and AD schema update

Hi all,

I'm having problems running the ADSchema update with Unity 4.0 and Exchange 2003

When running it, an error occurs:

"Setup failed to query the "AllowedChildClassesEffective" attribute" I've made sure that this is the Schema Master, I dont have any Anti-Virus running...

Any ideas?

Cisco Employee

Re: Unity and AD schema update

are all the domain controllers online?

try running the ADSCHEMASETUP directly on the exchange box

In general you need to verify these things first:

- add the account logged into the server as part of the enterprise

admins and schema

admins groups

- change the schema master to the correct domain controller (check with the schema management plugin in mmc which DC currently has the role)

- change the registry key to allow schema updates:



if this helps, please rate



if this helps, please rate
Community Member

Re: Unity and AD schema update

The problem was the registry key, that wasn't updated

Txs for the help|

Cisco Employee

Re: Unity and AD schema update

Another thing in addition to the other post here...

Make sure you are running the ADSchemaSetup.exe directly on the Schema Master server and not from a mapped drive. I see you say this is the Schema Master you are running this on but make sure you either copy the whole DVD/CD over to a directory on the server or just copy the SchemaUpdate folder from the DVD/CD over to it and run it directly there. That, or have the DVD/CD that has the ADSchemaSetup in the Schema Master drive and run it from there.


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