Try to scan on safemode. It works.
That didn't work. It usually freezes in one of the sinsxs folders. Somewhere in one of the x86_microsoft-windows-ie directories. Not always the same one. Sometiems in the jsprofilerui.dll, ieframe.dll, iertutil.dll, or one of the ie.dll files. I was contacted by mcafee. Was told it wasn't a mcafee issue, it was a microsoft issue. I'll try them later.