Smart 404 Not Found Fixer Pro - Version 4.5.5 Smart 404 Not Found Fixer Pro can be employed to uninstall programs. In addition, Smart 404 Not Found Fixer Pro allows the alteration of start-up programs, similar to the Microsoft Windows MSConfig utility. Users can disable start-up programs. The program also includes a registry cleaner to locate and correct problems in the Windows registry, such as missing references to shared DLLs, unused registration entries for file extensions, and missing references to application paths. Windows 404 Not Found Error is caused by misconfigured system files. So, from my experience, If you got 404 Not Found then there is a 96% chance that your computer has registry problems. This error should be fixed immediately to prevent further damage to the Windows system. A 404 error is when an Internet browser fails to recognize a Web page, or when an Internet page refuses to load. The issue can range from something as simple as a broken link to something as complicated as a server change. Fixing a 404 error can be as easy as checking one's spelling or as difficult as completely reconstructing