Here is the permanent fix:

Never download any ".exe" file or browser extension claiming to be a "MovieKhHD installer." These are viruses. The site works entirely in your browser. Method 2: Flush DNS and Change Your DNS Server (For “Site Not Found”) If the domain is correct but your browser says the site cannot be reached, your ISP is likely blocking the IP address.

Users often encounter a frustrating wall of errors: infinite loading screens, “Video not found,” broken audio, or the dreaded 404 message.

The smart fix is to change your habits. If you need a specific movie not available on free legal sites, consider a rental on Amazon Prime, Apple TV, or YouTube ($3.99) instead of battling malware for 2 hours.