I was working with someone recently who upgraded their Horizon View environment to 7.5.1 recently who also updated their vCenter to 6.7 – mistake #1.(to get off of the old vCenter Web Client). The customer wasn’t in a position to upgrade their ESXi hosts to 6.7 due to some vendor compatibility issues that needed to be resolved via firmware issues. (mistake #2)
When pushing a new version of a Horizon Instant Clone, they were receiving the error: “Error during provisioning: Cloning of VM Win10-Prod has failed: Fault type is SERVER_FAULT_FATAL – Runtime error: No full links for internal VMs found”
Did I mention that VMware signed off on the version information via an SR?
What did we do to fix the issue? The customer had a small enough VDI environment that it was easy enough to delete the VDI Pools and vCenter and start over (100 clients, 2 Pools).
What would fix the issue: Upgrade your hosts to vSphere 6.7
Moral of the story: Ensure your customers understand the software lifecycle and walk them through the process of ensuring all applications that are dependent on each other are FULLY ready for an upgrade.
Don’t pull a homer.