You're here because you have a file that has a file extension ending in .bkn. Files with the file extension .bkn can only be launched by certain applications. It's possible that .bkn files are data files rather than documents or media, which means they're not meant to be viewed at all.

A WordPerfect automatic backup file is created by the WordPerfect application, and upon generation of a WordPerfect automatic backup file, it is then associated to the corresponding WordPerfect document. This association is then used by the WordPerfect application in case the content of the corresponding WordPerfect document has been corrupted, or in instances where the WordPerfect document itself has been accidentally deleted. These WordPerfect automatic backup files are created by the WordPerfect software when a certain amount of time has elapsed, with the same WordPerfect document still on focus or has been left open in the WordPerfect application window. These WordPerfect automatic backup files are integrated with data encoding specifications that allow its content to be stored in the BKN file format and for users to be restricted from accessing its content primarily because only the WordPerfect application needs to open and access the content stored in these WordPerfect automatic backup files. These WordPerfect automatic backup files are also affixed with the .bkn extension.

Launch a .bkn file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .bkn file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .bkn files aren't yet associated with it. In this case, when you try to open a .bkn file, you can tell Windows which application is the correct one for that file. From then on, opening a  .bkn file will open the correct application. Click here to fix .bkn file association errors

Be careful not to rename the extension on .bkn files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

A file extension is the set of three or four characters at the end of a filename; in this case, .bkn. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.