DECREASING LEVELS OF SECURITY:
1. Running Microsoft Windows.
2. Running out-of-support Microsoft Windows.
3. Running out-of-support Microsoft Windows and having it report itself to a server of unclear provenance and security (which could be efficiently indexing such insecure machines, and possibly even exploiting vulnerabilities during this simple interaction).
4. Running out-of-support Microsoft Windows and updating its system software from a server of unclear provenance and security (which could install malware, possibly even defeating any outdated vendor signing).
SUGGESTIONS:
* If your important science/medical/industrial/etc. equipment is stuck on ancient Microsoft Windows, probably you want to keep it airgapped and treat it gingerly, while planning to upgrade to more sustainable equipment (and hopefully it doesn't fail abruptly before convenient).
* If you're playing with Microsoft Windows for personal use, that's fine, but maybe consider whether you'd prefer to spend your time and energy instead learning and creating atop an open source software platform.
* For many business and personal purposes, Debian Stable is a good OS platform, and this is one installer for it: https://cdimage.debian.org/debian-cd/current/amd64/iso-dvd/