Check out other possible problems related to CDF files. Remember! Manually editing the system registry is only recommended for advanced users, and changes made to it without proper knowledge may result in damage to the system. The second way is simpler and definitely recommended for less advanced users.
This can be done in two ways - one is to manually edit the Windows Registry and HKEY_CLASSES_ROOT keys. If the user already has one of the applications installed, the next step will be to associate it with the file extension CDF. Associate CDF Player with the CDF file extension
