You manage eight Windows PCs in a small office. On one workstation, you open the browser and try to download a newly purchased anti-malware suite from the vendor's official site, but the browser returns "Website does not exist." All other websites load normally on that PC, and the vendor's site opens on the other seven computers. What is the most likely cause of the problem on this single workstation?
A local firewall rule on the PC specifically blocks the vendor's domain.
The PC's hosts file entry for the vendor's URL points to 0.0.0.0.
The URL was mistyped in the browser.
Malware on the PC is blocking access to security-vendor websites.
Many malicious programs modify the hosts file, DNS settings, or proxy settings so the system cannot reach anti-virus or anti-malware domains. Blocking those sites prevents the user from downloading cleanup tools or definition updates, so the most likely explanation is that malware is already present on the affected PC.
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