On Windows OS, the local data file called "MobileID4.db" needs to be removed using the following procedure;


  1. Prior to deleting the file ensure that the Windows MobileID application is fully exited.
     

  2. Open a window, and enter the following folder address "%appdata%\MobileID";


     
  3. A new window will now open that contains the data file "MobileID4.db", delete this file;


     
  4. Having deleted the data file you can now run the PC MobileID application, and the PIN can now be set.
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