How to install and upgrade RPA runtime environment

In order to use Robot action, you will need to install the RPA runtime environment.


The number of machines that can run the application will be set to the number permitted under the license agreement. Uninstall the RPA runtime environment from PCs where robot actions have become unnecessary.

Normal installation and upgrade process (automatic installation)

  1. Execute the robot action.


    When the "Take screenshot" button in the "Specify the operation target" dialog or the "Select range" button is clicked, the same dialog will be displayed.

  2. Click the "Execute" button in the dialog.

    For a new installation


    For a version up



    You can change the installation destination if "Install for all Windows users" is selected. However, you must have the administrator privileges.


    The appropriate RPA runtime environment will be downloaded and installed automatically.

  3. If you receive an uninstall confirmation for an older version, click "Yes".


    You must have Windows administrator privileges to uninstall an RPA runtime environment that is installed as "For all Windows users" or is 1.2.1 or earlier.

  4. After the installation is complete, RPA runtime will resume automatically.


If it is able to execute automatic operation without upgrade, cancelling the installation will start the currently installed RPA runtime environment, and the installation screen will not be displayed until CELF is restarted.


If automatic installation does not work, you can also manually install the RPA runtime environment. Please refer "How to install and upgrade manually".

How to install and upgrade manually

Although the RPA runtime environment is installed automatically, you can also install it manually.

  1. Download the installer from the download website

  2. Run the installer and select installation mode.



    The difference between the installation modes are as following.

    Install for current user : Only current user can use the installed RPA runtime environment. No administrator privilege is required.

    Install for all users : All users can use the installed RPA runtime environment. Administrator privilege is required.


    The screen will not be shown if upgrading. It will be installed in the same mode as the one currently installed.

  3. Run the installer and follow the instructions to install.


If you’re using RPA v1.2.1 or an earlier version, see here.