I have had to uninstall EPO 4.6 from a server running 2008 R2. I uninstalled using REVO Uninstaller. Rebooted. Tried to install, and it instead asked me to UNINSTALL. This then failed with the following error: "Setup was unable to read the add/remove programs entry for Mcafee epo and cannot continue. Verify that the program is install [sic] correctly and that you have this entry before you continue."
I have gone through the registry, deleted every mention of mcafee and network associates. Rebooted several times. No joy.
I have also run two different Mcafee removal tools.
Any suggestions would be appreciated
The ePO installer is a complex beast, uninstall through add/remove programs is actually preferred believe it or not.
Still, that does not help you now and i'm afraid from the way it's described the issue is well & truly wedged.
Your best best at this point is to walk through McAfee support article: KB66586 - How to manually remove ePO 4.5 / 4.6
I'm afraid if you've followed that kb instruction completely it's wedged beyond the ability to clean up.
By all means open a support call but you may be staring in the face of using a different server or an OS rebuild.