On remediating virtual machines using the Update Manager, a number of VMware Tools upgrades would fail reporting the following: Error Upgrading VMware Tools vix error code = 21009 On investigation of vix error codes at https://www.vmware.com/support/developer/vix-api/vix16_reference/errors/errors.html there was error code reference for the above. So now it was time to look at the vmware.log file for … More VMware Tools Upgrade fails with vix error code 21009