LucD,
Last week, I have performed the upgrade for VMware tools & VM version 13, but during post upgrade, there were around 25 VM's post-upgrade were not coming up with error "The destination host is not compatible with the hardware version to which the virtual machine is scheduled to be upgraded " I fixed it using below KB article.
http://www.running-system.com/error-destination-host-not-compatible/
https://kb.vmware.com/s/article/2080107?lang=en_US
Now today, we were unable to migrate VM's to new Cluster and the VMotion is failing with error " There are compatibility issues that need your attention."
I guess and as per my understanding - the First issue was due to VM's was already having VM version 13 and the script changed the VMX configuration while executing since no upgrade was required and 2nd error is due to the VM was running on EVC mode disabled while doing the VM version upgrade and we are trying to migrate to New Cluster having EVC mode enabled which is not allowing.
Before I start the prod VM's since we will have short windows, I want to isolate the issue. Kindly help.
thanks
vmk