/var/run/log/hostd.log, below error log snips are available:YYYY-MM-DDTHH:MM:SS Db(###) Hostd[#######]: [Originator@#### sub=Vmsvc.vm:/vmfs/volumes/<Datastore>/<VMName>/<VMName>.vmx] Updating current heartbeatStatus: gray -> green
YYYY-MM-DDTHH:MM:SS Db(###) Hostd[#######]: [Originator@#### sub=Vmsvc.vm:/vmfs/volumes/<Datastore>/<VMName>/<VMName>.vmx] Updating current heartbeatStatus: red -> yellow
YYYY-MM-DDTHH:MM:SS Db(###) Hostd[#######]: [Originator@#### sub=Vmsvc.vm:/vmfs/volumes/<Datastore>/<VMName>/<VMName>.vmx] Updating current heartbeatStatus: yellow -> gray
This issue may occurs after a recent ESXi Host version upgrade.
This issue may occurs if the ESXi Host version is upgraded, but not the Hardware version of the VMs.
To resolve this issue, follow the steps below: