While Blizzard has authenticator does not support PC and windows mobile phones, there is a java compatible app that is on sale on the Blizzard mobile store. In this tutorial we show you how to run this Java app on your computer.
How to run Blizzard Authenticator PC
Next we need a Java emulator, for this we will be using Midpx v 1.3.1 (download). This emulator works well because it converts the .jar app into an exe file that can be run from your desktop.
Save the Authenticator to your desktop. Right click on the file and choose Open With and select midpx2exe compiler. Select English as the language. On the next screen choose “This time. Ask me next time” and click ok.
You will now see a 14 digit serial number on the emulator screen. If you cannot see the 14 digits on the screen see the troubleshooting in the next part. Go to Battle.net and add the authenticator by entering the serial (without hyphen) and the code shown.
You have successfully setup the authenticator on your WoW account ! You can start the emulator using the exe file that was created on your desktop. There will also be a new folder, DO NOT DELETE this folder as it saves the settings for the application. Make a backup of the exe file and folder so you do not loose it. Loosing it is the same as loosing a battle.net authenticator, you will have to call them to get it removed !
If you cannot see 14 digit serial number
There should be a new folder after running the Java emulator. There will be a single file inside this folder. Right click and open the file using notepad. You should find the serial number in this file. It will be something like EU-1234-1234-1234. This authenticator also works for US versions of the game.