Skip to main content

Unable to run tests with Firefox 121

You are unable to run tests with Firefox 121 installed from Snap on Linux and encounter the following error:
Caused by: org.openqa.selenium.WebDriverException: Process unexpectedly closed with status signal
  1. Go to Project > Settings Desired Capabilities > WebUI, then select Firefox.
  2. Click Add to input the following desired capabilities:
    moz:firefoxOptionsDictionaryClick the (...) button to open the Dictionary Property Builder dialog, click Add, then input values in Table 2.
    Table 1. Table 2
    binaryStringIn Firefox settings, go to Help > More troubleshooting information > Application Basics. Copy and paste the Application Binary to the Value field.
  3. Click Apply & Close.
    • Alternatively, you can download a Firefox release from Firefox website: Download Firefox.
  4. Re-run your tests with Firefox.
    The tests should run successfully.