DLL-Files Fixer (specifically version 3.3.91) is a system utility that is widely categorized by security experts as a Potentially Unwanted Program (PUP) or "scamware". Searching for "license keys" for this software carries high security risks, including malware infection. Security Risks & Status

Updated systems rarely suffer from missing DLL files. Go to to ensure you are running the latest version of Windows. Conclusion

Registry cleaners can sometimes delete essential files if they aren't fully compatible with your specific version of Windows.