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.