Got esxupdate error code:15 on upgrade attempt from vSphere 5.5 to 6.0 using VUM
Hi,
I got an error when I tried upgrading the production host from 5.5 to 6.0 using the vSphere client VUM. I successfully upgraded a backup host with the same upgrade package a couple days ago.
I looked through the esxupdate.log file but nothing jumped out at me.