If you are stuck on Windows Installer error dialog box saying:
The feature you are trying to use is on a network resource that is unavailable.
No worries. This is related to Cached Installers issue. Microsoft support got your back. They have an handy dandy Microsoft Fix It program to fix the Windows Installer issues. You can use either to Install or Uninstall a software from your computer using this Fix It program.
Download the Fix It program and run it on the troubled computer. Get it from http://support.microsoft.com/mats/Program_Install_and_Uninstall