Error 'Cannot complete the License assignment Operation', Make Sure license service is running'

[RajatWadhwa2017]

Need quick help from experts. In our production enviornment, We have vSphere 6.0 Update 2, with single vCenter server & 2 seperate Platform Services Controllers.

While adding the ESXi Host to the Cluster, getting error 'Cannot complete the License assignment Operation', Make Sure license service is running. We having this issue & unable to sort it. We already have available ESXi & vCenter Licenses. This host was already in cluster, however, due to some issues, we have to disconnect this host & remove it from the inventory. Now, after adding this host, getting this issue. Does anyone know what could be the cause of this?

Thanks

Rajat

[Camero]

Rajat,

Can you check if the license service is indeed running ?

Follow the KB to check the status of the License service How to stop, start, or restart vCenter Server 6.x services (2109881) | VMware KB

Also, check for any error in vpxd logs and post it here.

[VIR2AL3X]

RajatWadhwa2017​ - try rebooting the host and then adding back to vCenter once it has rebooted.