I helped a friend install Windows 10 yesterday, and the whole process went great until we restarted the computer. It bluescreened as soon as it booted, with the following error: driver_irql_not_less_or_equal (mfewfpk.sys). After a lot of fighting, we managed to get into safe mode and delete the driver in question, which we know for sure is connected to McAfee.
Upon further research, I found multiple other threads of similar problems. Apparently, McAfee programs do not play nice with Windows 10.
I have two big reasons for posting this. One, I want to know if this is an update issue- she had uninstalled McAfee years ago, and I wonder if the driver being out of date was the problem. I have up to date McAfee Total Protection on all of my computers- will these cause issues with Windows 10?
As I have done research, it appears that they very likely WILL cause problems with the new OS, which leads me to a huge question- WHY? Microsoft gave a solid year's worth of warning to program developers to allow them time to update their software for the new OS. This is one of the few times I have ever seen Microsoft do something in really the right way. It seems very strange to me that at $100 per year, McAfee appears to have been totally blindsided by the new OS. I'm also very disheartened by the lack of communication on McAfee's end- it took me far, far too long to find the article (link below) detailing how to upgrade to Win10. This should be front-page stuff, plastered in MASSIVE LETTERS for the public to see so we don't have to go through 30 minutes of fixing a crashing computer.
But, this actually leads to another large complaint about McAfee that I feel needs to be addressed here- she had uninstalled the program from her computer years ago. WHY were there files still on her computer from McAfee? This is a quite consistent problem with your software- even if I run your uninstall tool, there are ALWAYS still files left over- mainly drivers. And because those drivers are system drivers, they can cause issues like this. In fact, they HAVE caused issues with me before- I recently reinstalled McAfee on my gaming desktop and it caused a memory leak that BROKE THE OPERATING SYSTEM. I had to replace it. That was a fun 7 hours with tech support.
I have to rant a little bit, because it's pretty frustrating to have to go through all of this to figure out one simple thing.