I've exported an OVF template from a working CentOS 6 VM. My cluster is on VMware ESXi 6.5.
To test if the export was ok, I decided to import back in by doing "Deploy OVF template…"
After successfully deploying the VM, I receive the following error when doing Power On:
The guest operating system 'centos6_64Guest' is not supported
Best Answer
This error is related to Compatibility.
Right click on the VM, and do:
Compatibility
Upgrade VM compatibility
Yes
ESXi 6.5 and later
The VM will now start.
Note: The instructions are for vSphere Client version 6.5.0.20000.