While adding the ESXi host in Vcenter, the host shows as disconnected and grayed

Hello All,

While adding the ESXi host in Vcenter, it has asked for SSL certification and then asked to enter for Liscence key where i didn't mention those details, so the host got added but grayed with disconnected status.

I am able to ping the Esxi host from Vcenter and there are no RTO's. Is this due to not entering the Liscence key of Esxi ?

Can any one please suggest me.

Thanks

arvin1201