Hi,
I have a orphaned subdomain with 4 DCs (sub.root.local) (two of them as GC), where I can't contact nothing on parent domain (root.local). Previously, we had to delete all settings that pointed to sub.root.local in root.local, because they could not promote a new server to be Global Catalog. Now I'm having the same problem, but it's on my end. I successfully promoted two new DCs, but I'm receiving the following warning after running repadmin /showrepl
DSA Options: IS_GC
WARNING: Not advertising as a global catalog.
Site Options: IS_GROUP_CACHING_ENABLEDI was directed to use Microsoft Tool named AD Replication Status Tool and almost every test passed, except for this:
Synchronization attempt failed because the destination DC is currently waiting to synchronize new partial
attributes from source. This condition is normal if a recent schema change modified the partial attribute set.
The destination partial attribute set is not a subset of source partial attribute set.
The above test is a synchronization with DC=root,dc=local and it appears only in the olders DCs, that are Global Catalogs.
I'm thinking of using ntdsutil to remove the references to root.local, but I'm not sure if this would break my enviroment, since I didn't found any information about using ntdsutil to remove parent domain.
Please, if you do need more information I will be pleased to answer.