If you own a classic BMW from the E38, E39, E46, E53, E83, or E85 eras, the (often called "PA Soft") is an indispensable tool for DIY maintenance. However, getting the BMW Scanner 1.4.0 drivers to work on modern 64-bit operating systems like Windows 10 and 11 is notoriously tricky.
: On Windows 10/11, you may need to disable "test signing" or driver signature enforcement to allow the unofficial drivers to load. Use the command prompt as an admin and run bcdedit /set testsigning on , then restart your PC. Common Error Fixes bmw scanner 140 drivers