It should only be performed in the case of identification by a chip card.
Please, do the following in the case of using version Firefox 19.x or higher please, save the following file on your computer if the automatic plug-in installation has been unsuccessful:
Save the following files to the appropriate places:
The name of the saved file should be as follows: npebank2.xpi
By using the File/Open... menu point of the Firefox 6.0 browser, please, open the saved file and install plug-in.
After rebooting the browser, K&H e-bank can be used.