Thanks for your reply,

Here is my scenario, We have only one domain, all of our current domain controllers are 32 bit. The plan is to upgrade to Windows R2 on new hardware servers which are 64 bit. At the moment only one server 64 bit server has come in, hopefully the other units will arrive soon.

So to upgrade the schema, I’ll be running the command of “adprep32 /forestprep” first then followed by “adprep32 /domainprep”.

Note I’ve read in the Win 2008 Resource Kit book that they suggest to disconnect the server from the network when performing the schema upgrade, but I have not seen this recommended anywhere else,

Is it standard practice to bring the server offline during the schema upgrade and then reconnect it so that it can replicate the changes?

Perhaps it elimates replication issues?

Please advise,