Error "McAfee real-time scanning won't turn on" I recently purchased McAfee Total Protection and like many other people from previous years, my Real-Time scanning will not turn on and I cannot run a scan ("An unexpected error occurred..."). I am running Windows 7. I have already tried the MVT - it ran and told me that it had fixed the Real-Time scanning, but it has not resolved the issue. I do have (the crappy) Anvi Smart Defender installed - my laptop had a virus a couple years ago, but otherwise, I don't think there are any competing antivirus programs on my machine. For more details https://360antivirussupport.com/mcafee-real-time-scanning-wont-turn-on-in-windows/