File extension UNKNOWN doesn't belong to any particular application. Presense of these files usally indicates problems with Windows Registry or presense of malware.

Open UNKNOWN File on Windows

Open UNKNOWN File on Mac OS

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Open UNKNOWN file article translations

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For more general information about how to open UNKNOWN files, file extension unknown and registry you can read one of the following articles:

  • open unknown fileWindows registry - Windows registry is included in modern Windows operating systems to replace the older INI files which also contained system configuration. Let's concentrate on the structure and purpose of Windows System Registry, review some possible attacks to it and ways to avoid them...
  • open unknown fileFolders, files and paths - Files are the entries or information stored on your computer. These are represented by binary coding and written on the tracks on a disk. Files are often represented by distinct icons, a normal practice done by Microsoft with their products including system files for their series of operating systems...
  • open unknown fileWhat are file extensions? - File extensions are unnoticed yet are very crucial parts of the computer world. But many are still unaware of the basic foundation and principles behind the remarkable wonders of computers...