Hey guys,
We have a DC in one of our Hyper-V VM environments that has a lot of problems. It appears that system files have been corrupted. I ran sfc /scannow and it didn't resolve the issue. MMC snap-ins don't load and other stuff doesn't function properly.
So we went ahead and decided to create a new DC and moved all the FSMO roles to the new DC. However when I try to remove the old DC using dcpromo /forceremoval I receive the error below. I haven't really found any articles that were very helpful. If anyone can shed some light on what's going on here I'd greatly appreciate it. Thanks!
Power off the failed DC and make sure the remaining DC is functional. Use ntdsutils on the new DC to make sure it has all the roles.
Ntdsutil can be used to seize tge roles meaning the old DC must not be put back on the network in its old state if seizure is done.
If you do seize, make sure it is done after all the data files needed have been transferred.