Virtual machine is rebooted unexpectedly

Products

• VMware vCenter Server 8.0

Issue/Introduction

After restarting the virtual machine, unexpected restarts occur again.

• In /vmfs/volumes/<datastoreUUID>/<folder>/vmware.log, there are entries similar to:

  yyyy-mm-ddThh:mm:ss.ffZ In(05) vcpu-0 - Chipset: The guest has requested that the virtual machine be hard reset.
  yyyy-mm-ddThh:mm:ss.ffZ In(05) vcpu-2 - Guest: Command line: /mg /s /v"/qb- REBOOT=R VMREBOOTPROMPT=Y" /L "C:\Windows\TEMP\vmware-SYSTEM\vmupgrader_msi.log_####_####.log" 
  yyyy-mm-ddThh:mm:ss.ffZ In(05) vcpu-0 - Chipset: The guest has requested that the virtual machine be hard reset.

Environment

VMware vCenter Server 8.x

Cause

If automatic updates for VMware Tools is enabled, VMware Tools updates may be performed during virtual machine restarts. In such cases, the virtual machine restarts again unexpectedly.

Resolution

1. Check if automatic tools upgrade is enabled
    vSphere Client > Virtual machine > Updates tab and see "Automatically upgrade on reboot :  On " on VMware Tools.
   
   
2. Disable automatic tools upgrade
   
   Configure for a virtual machine
     vSphere Client > Virtual machine > Updates tab and click "Turn Off" on VMware Tools.
   
   Configure for multiple virtual machines
     vSphere Client > cluster > Updates tab > VMware Tools > check Virtual machines and set "Off" from SET AUTO UPDATE.