This article provides information on why the message is displayed in the virtual machine event logs after every reboot.
Symptoms:
- Shutting down a Windows Guest operating system results in this EventID 1000 message:
[warning][vmsvc:autoUpgrade] vmx returned Autoupgrade is not supported for guest.initiateUpgradeAtShutdown
Or:
[warning] [vmsvc:autoUpgrade] RPC 'guest.initiateUpgradeAtShutdown' failed, reply is Unknown command.