I just learnt (the hard way) the correct way to add Hyper-V hosts to SCVMM. You… should not use the service account used to run SCVMM admin service. should not use your own domain admin or admin level credentials. Instead you should… Create a VMM host management account in AD. Add that AD account to the local admin group on all your Hyper-V hosts. Add that AD account to your VMM as a “Run As Account”. Then while adding a new host to VMM, specify that run as account as the account to be used to add that hyper- host. Until I did it this way, I was having trouble…