Updating hosts file is not working
Highlight the file (single-click) then right-click and select Extract All from the menu ...
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They claim that all Microsoft is doing is taking steps towards ensuring that users can get updates and patches to the operating system when needed, without worrying about any malicious software modifying the computers’ HOSTS file (and some do).
BTW, Windows 10 actually warns you when you (or a software) tries to modify the contents of the HOSTS file: So how do you prevent Windows from “talking” to these FQDNs?
The problem was related to the Anti Virus Software "AVIRA" They have a setting for enabling/disabling HOST file protection, but this was broken.
Ever since the beginning of Windows and the TCP/IP protocol, name resolution of computer names has been done through several methods (knowing there are Net BIOS names and DNS names, we’ll focus on DNS names in this article).