CLion 2021.1 Help


You can evaluate CLion for up to 30 days. After that, buy and register a license to continue using the product.

  1. Do one of the following to open the Licenses dialog:

    • From the main menu, select Help | Register

    • On the Welcome screen, click Help | Manage License

    The License Activation dialog
  2. Select how you want to register CLion or a plugin that requires a license:

    JB Account

    Register using the JetBrains Account.

    If you are using two-factor authentication for your JetBrains Account, specify the generated app password instead of the main JetBrains Account password.

    JetBrains Account with 2-factor authentication

    For more information, see What is JetBrains Account?

    Activation code

    Register using an activation code.

    You can get an activation code when you purchase a license for the corresponding product.

    License server

    Register using the Floating License Server.

    When performing silent install or managing CLion installations on multiple machines, you can set the JETBRAINS_LICENSE_SERVER environment variable to point the installation to the Floating License Server URL.

    Alternatively, you can set the Floating License Server URL by adding the -DJETBRAINS_LICENSE_SERVER JVM option.

    CLion detects the system proxy URL during initial startup and uses it for connecting to the JetBrains Account and Floating License Server. To override the URL of the system proxy, add the -Djba.http.proxy JVM option. Specify the proxy URL as the host address and optional port number: proxy-host[:proxy-port]. For example: -Djba.http.proxy=

    If you want to disable proxy detection entirely and always connect directly, set the property to -Djba.http.proxy=direct.

Last modified: 27 July 2021