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How do I fix: unable to change GPIB settings on an M9037A or M9537A Embedded Controller?

This issue applies to systems with the following software and symptoms:

  • M9037A or M9537A Embedded Controller
  • IO Libraries Suite 17.1 or later
  • User is unable to change GPIB settings of the M9037A’s GPIB port in Connection Expert, or settings quickly revert after changes are made in Connection Expert

To resolve this issue:

  1. Open the following file in notepad.exe*:

    %programdata%\Keysight\Keysight IO Libraries\DeviceIO\DeviceIO.config
  2. If this file doesn’t exist, then you are not affected by this issue, contact your local Technical Contact Center for further assistance –
  3. In the DeviceIO.config file, change the following text:
  4. Also change the following text:
  5. Save the file
  6. Reboot
  7. Make your changes in Connection Expert

*Note: The %programdata% folder is hidden by default, so copy and paste the entire file path into the File Open dialog.


Last Revised: August 26, 2016