Once upon a time, I tried unistalling MSE because it was conflicting with other antivirus/malware programs.
Afterwards, I found I was unable to download any files from the internet, I would get an error saying "Virus scan failed, file deleted".
I assume this was an issue with MSE, so I decided to reinstall it.
I uninstalled all my other antivirus/malware software, ran Ccleaner, downloaded MSE from a friend's computer and attempted to reinstall it on my machine.
The MSE installer comes up with an error about not being able to find or access epp.msi, and neither can I.
After getting frustrated by the snipe hunt on Microsoft's "tech support" forum, I decided to try here.