This post explains what to do when your XenServer 6.0 will not install hotfix XS60E001. This is important because hotfix XS60E001 is required for other hotfixes.
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When upgrading XenServer to XS60E001, XenCenter applies the fix and reboots the host only to have the hotfix status be either “not applied” or “partially applied”. Repeating the process yields the same results.
Instead of running the upgrade using the default settings, automatic, when installing this update, do a manual update. The manual update means you will need to reboot the XenServer after the update finishes.
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