What else can I do to solve the problems with the JKB file?

The reasons for the lack of the ability to open a JKB file on your computer may be at least several. The easiest thing is to find a suitable application installed on your computer, which will open a JKB file. If there is still something wrong, you might want to check:

.JKB file extension
  • whether the JKB file is not damaged
  • whether the file is not incorrectly linked in the registry entries