(LMS1) Handling issues with docking and/or undocking laptop

Technical Note 79030






11/13/2020 6:17 PM

Note: - This applies to legacy versions of IAR Embedded Workbench (2013 and older) which used License Management System version 1 (LMS1).


Microsoft Windows terminates with a blue screen when docking or undocking a laptop from the docking station.


Follow these steps to try to get the Windows system to continue operating when a laptop is docked or is undocked from the docking station.

  1. Uninstall all dongle drivers, using step 2 in technical note 200922. Then restart the computer.
  2. Install the latest dongle driver for LMS1, using step 3 in technical note 200922. Then restart the computer.
  3. Disable the parallel port, using method 4 in technical note technical note 62867. Then restart the computer.

Round up by removing directories and a project related file:

  • Search for the directory where the Embedded Workbench project file (.ewp) is located. Delete all folders in that directory: \Settings, \Debug, \Release, etc.
  • Delete the file with the extension .ewd, which holds the debugger settings.
  • Then open the project and set lost settings again. For example, debugger settings has been lost.


Docking or undocking might work better after trying these suggestions.

Note: If these suggestions do not help, make sure that the legacy version of IAR Embedded Workbench is not running when you are docking or undocking the laptop.

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