Dcpromo fails trying to promote an Enterprise Edition R2 64-bit server to
domain controller.

Current configuration:
2 Server 2003 standard edition 32-bit domain controllers. Service pack 2
installed and running at Native 2003 level.


Adprep /forestprep fails with "Adprep was unable to extend the schema. The
schema master did not complete a replication cycle ..."

( Adprep from disc 2 of the 32-bit, R2)



I'm able to manually replicate with the AD Sites & Services application.

What am I missing? Should I / can I upgrade the Standard Edition 2003 to R2
EE then add the new 64-bit servers?

JK