The normal file is not downloaded from the Internet. How to fix?

Question

Malware

When downloading files from the Internet, the file is replaced with a fake one in the archive. A swirling cloud appears on the download page. The computer, scanned by anti-virus scanners, scanned by various anti-advertising scanners does not find anything. Reinstalled browsers, does not help either. What else would you recommend trying?

Answer 1

What else would you recommend trying?

1. Install VirtualBox, install Linux there (for example, Ubuntu), try downloading there (installation is no more difficult than installing Windows and takes ~ 15 minutes on fairly "average" computers)
2. Make sure that it downloads exactly what it should
3 If steps 1 and 2 did not help, reinstall Windows
4. If step 3 did not help, repeat it + change provider

Answer 2

Well, maybe at least try from another device / computer and make sure that it should be *.exe, and not the admin, just tupanul in mod_rewrite.
And in the devtools, carefully check the download URL for a substitution (url in the sense of a domain)
Oh, and I forgot the most important thing: look in the browser extensions menu. Here are all the signs of some kind of plugin (by the way, did you install anything the day before?)