Installation ended prematurely because of an error.

 

However, when trying to install Hotfix Rollup Pack 1 for Citrix XenApp 6.5 for Microsoft Windows Server 2008 R2

http://support.citrix.com/article/CTX132122

"Installation ended prematurely because of an error."

The following solutions have resolved this error in the majority of cases:

Make sure short file name creation is enabled on the target machine.

Navigating to the following registry entry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem

Make sure the value "NtfsDisable8dot3NameCreation" is equal to 0. This indicates that short file name creation is enabled. A value of 1 indicates that this functionality is disabled. You should change the value to 0.

After modifying this value, the target machine should be rebooted before attempting to launch the setup again.