SCVMM Shows Error as below

Error (801)
VMM cannot find VM object xxxxxxxxxxxxxxxxxxxxxxxxxx.

Recommended Action
Ensure the library object is valid, and then try the operation again.

Run the following Powershell script. It will remove the VMs with missing VHD info from SCVMM Console. It will not delete the VMs, it will only remove them from SCVMM DB and Console.

Import-Module -Name "virtualmachinemanager"
Get-Vmmserver YOURVMMSERVERNAME
$Cluster = Get-VMHostCluster YOURCLUSTERNAME
$VMHosts = Get-VMHost -VMHostCluster $Cluster

foreach ($VMHost in $VMHosts) {
	$VMs=Get-VM -VMHost $VMHost

	foreach ($VM in $VMs) {
		if (Get-SCVirtualHardDisk -VM $VM) {
			#VM is fine, VHD info is fine, do nothing
			Write-Host $VM" is Good"
		}
		else {
			#VHD info is bad, delete VM from SCVMM
			Write-Host "Removing "$VM
			Remove-SCVirtualMachine $VM -force
		}
	}

	foreach ($VM in $VMs) {
		if (Read-SCVirtualMachine -VM $VM) {
			Write-Host $VM" is Good"
			#VM is fine, do nothing
		}
		else {
			#VM info is bad, delete VM from SCVMM
			Write-Host "Removing "$VM
			Remove-SCVirtualMachine $VM -force
		}
	}
}