How to find out the Windows username using WEB?

Question

Web development

Good afternoon, there is a site in the local network, the
task is to find out the username of the user who accessed this site using WEB technologies
via echo $_SERVER[REMOTE_ADDR]; I get the user's IP, but $_SERVER[REMOTE_USER]; no, and phpinfo() is not there either. REMOTE_USER,
can you tell me if it is possible to pull out the username through JS and write it to a file?

Answer 1

I think that by means of WEB it is forbidden. You can find out the Windows username using Windows tools.

Answer 2

Is it ?