This will make Windows pretend that an old version of the EOS Utility has already been installed.
Download and execute this registry file:
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Canon\EOS Utility]
Registry fix based on Wiltshire Tutorials's info.
Download the EOS Utility Updater:
EOS Utility 2.14.20a Updater for Windows for EOS 60D
Install the EOS Utility by opening the downloaded updater.