The “Cadence License Server Configuration Utility” is used to update licensing for OrCAD products. The instructions that follow explain how to update licensing when after you modify the OrCAD products you are licensed to use. The setup and configuration of licensing for new OrCAD 17.4 products is discussed separately in the “Install OrCAD 17.4 Product” guide.


If your new license file is on a dongle, be sure the Cadence licensing dongle is plugged into your computer before you begin. Only one licensing dongle may be plugged into your computer at a time.

  1. Open your Windows Start menu and select Cadence > License Server Configuration Utility to launch the utility.

    The License Server Configuration Utility may also be opened from the following path:

  2. Click the Browse button to select and enter the absolute path to your license file.

  3. Click the Next button to continue.

  4. Set the Host Name field to your machine name if the field does not automatically populate. Do not modify any other setting.

    Note: You can easily verify your hostname by entering hostname into a Command Prompt window.

  5. Click Next to continue.

  6. Follow the remaining instructions to complete the procedure.



If a licensing error occurs, complete the following:

  • Restart your machine (with the dongle plugged in if you are using one)
  • Try to check out the software again.
  • Capture a screen image of the error message generated, so that you can forward it to EMA Technical Support.
  • Forward your license.dat file and degug.log files, (located in the directory: C:\cadence\licensemanager) to EMA Technical Support.


If the server fails to start or restart complete these additional steps.

  1. Open the LMTools Utility either directly from the file path: C:\Cadence\LicenseManager or by entering LMTools into your Windows Start/Search field.

  2. Open the Start/Stop/Reread tab and select the Stop Server button.

  3. Wait 5 seconds.

    Note: if you receive an error message that states, "Unable to Stop Server" it is still important to continue with these steps.

  4.  Click the Start Server button.

  5. Try again to open your software.