What is a .UNKNOWN file?
A file that ends in .UNKNOWN is a type of file on Windows computers that the system can't recognize because it doesn't know which program it belongs to. This usually happens when the file's original extension (the few letters after the dot, like .txt for text files or .jpg for images) is missing or has been changed. The .unknown extension might be used temporarily to mark the file until the correct extension can be figured out or restored.
Since the file type is unknown, there isn't a specific program designed to open it. The best way to handle such a file is to try and find out what kind of file it originally was. This might involve remembering what the file was used for or looking inside the file with a text editor for clues. Once you have an idea of the original file type, you can rename the file with the correct extension (for example, changing .unknown to .docx for a Word document) and then open it with the program that originally created it or is meant to open that type of file.
Verification
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