The easiest way to find out which Active Directory Domain Controller holds the FSMO roles is the following: Open a CMD box Type netdom query fsmo The output is something like C:\Windows\system32>netdom query fsmo Schema master               DC1.ad-domain.local Domain naming master      DC1.ad-domain.local PDC                         DC1.ad-domain.local RID pool manager            DC1.ad-domain.local Infrastructure master       Read more [...]