Install or update GRE maintenance or subscription key from the command line (no internet)

Without internet access, you register the license with Four Js from another machine via the internet, or by phone. Then use the greWrt command line tool to install or update the maintenance or subscription key of your Genero Report Engine (GRE) product.

Before you begin:


If your installation directory is in the C:\Program Files path, you must run as administrator when you license the product. This avoids any permission issues.

Register the license

  1. From a machine with internet access, open a browser and navigate to the Four Js web site to get the maintenance key. See the procedure described in Get the maintenance or subscription key.
  2. Start the command line interface.
    Open a command prompt.
    • On Linux®/UNIX®/macOS™, open a command prompt. "sudo" may be required.
    • On Windows®, open the Command Prompt from the Start menu .
  3. At the command line enter the command to install the maintenance key:
    greWrt -m maintenance-key

    A message is displayed in the output to say the license installation was successful.

    License installation is now completed.