How do I prevent Microsoft from installing Compattelrunner.exe malware on my comptuer?

This is the fourth time I have found this malware running on my computer after removing three previous updates responsible for it.

I have accordingly written all Windows products lousy recommendations in every possible venue (e.g. and filed a complaint with the FTC. The bottom line is, in fact, that it is illegal to install unwanted software on somebody's computer, and Microsoft is ignoring the permission settings for automatic updates. Please tell me if I need to act on this, or if the problem is going to stop.

Here is the review I just posted for you on Amazon.

Based on my experience with Windows 7.

Installs malware (compattelrunner.exe, an executable that can take over more than 70% of your CPU) while disregarding your update settings ("download updates, but ask me which to install"). Reinstalls this malware after you remove it; this review was prompted by finding it on my computer for the fourth time after I removed it three previous times.
"Malware (for "malicious software") is any program or file that is harmful to a computer user." which includes Compattelrunner.exe due to its effect on computer performance even though it obviously does not damage files, hold the computer for ransom, and so on.


There is no problem with the KB descriptions, but rather with what Windows Update tells you; that is, you have to go to the KB page to check every update (unless it says security or Windows Defender). They actually sent out a Windows Defender or other security update a day after I installed another update.

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Question Info

Last updated May 17, 2021 Views 12,417 Applies to: