Another quick blog post about changing domain controller IP and updating FMSO. Change Domain IP Run CMD as admin Step1Dcdiag /s:LAB-DC01 Step2change IP to new IP Step3Ipconfig /flushdns Step4Ipconfig /registerdns step5Dcdiag /fix netdom query fsmo Move-ADDirectoryServerOperationMasterRole -Identity LAB-DC02 -OperationMasterRole SchemaMaster, DomainNamingMaster, PDCEmulator, RIDMaster, InfrastructureMaster Windows Extend License (run in powershell and extend domain) slmgr -rearm