The host upgrade from ESXi 5.5 to ESXi 6.0 failed with the following error: „Cannot execute upgrade script on host“.   I found two possible issues – the second one worked for me: Issue 1: /bootbank/state.xxxxxxxx directory not empty Take a look at KB 2007163 „Upgrading a VMware ESXi host fails with the error: Cannot … Continue reading “Cannot run upgrade script on host” during upgrade from esxi 5.5 to 6.0