Before the install, try running this command at the command prompt
fsuitl behavior set disable8dot3 0
I tried the command. Now when I run the setup.exe program; the installer displays Configuring the Windows Installer, flashes up a screen where it would start the install and stops with the message:
“The wizard was interrupted before McAfee ePolicy Orchestrator could be installed. Your system has not been modified. To complete the installation at another time,please run setup again."
I wish McAfee would include in the docmenetation the requirement for 8dot3 naming.
Here are some things you may want to try
1. reboot the system, delete and clear out all temp files created by the installer
2.Place the installer in a directory with a short path..like c:\install
3.Run setup from the command line using a debug switch so you can see where it is failing
Where x=1 to 3
If it is a problem because of missing short directory names, you can verify that by examining the directory output of C:\Program Files\McAfee folder.
At the command prompt, type dir /X /S C:\Program Files\McAfee
Check if there is a short file name listed for ePolicy Orchestrator folder - should be something like EPOLIC~1. I doubt this is the issue - since ePO would fail to install if the short filenames were not enabled in the first place.
As John suggested, you could attempt gathering the debug logs with setup.exe DEBUGOUTPUT=2 from the command line.
Note that if you use setup.exe with DEBUGOUTPUT=3, all passwords are in clear text and visible in the logs.