Buzz
You've been using Mozilla Firefox as your primary browser. However, today, when you attempted to launch the browser, you were greeted with this message: 'Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system.' This error signifies that while Firefox seems to be running, it's actually not responding. Despite multiple attempts to reopen it, the issue persists. This article will walk you through troubleshooting this error.
Causes of Mozilla Firefox starting but not responding:
The above error occurs when you improperly close Mozilla Firefox browser.
Your Firefox version might encounter errors during usage. You can download the latest version of Firefox here.
- Step 1: Open the Task Manager (press Ctrl + Alt + Esc).
- Then, switch to Processes and select firefox.exe (use the shortcut key F).
Then press End Task. Next, press End Task again to complete the process.
- After deletion, you can launch the browser normally without any issues.
This method allows you to resolve the issue of Firefox failing to start without responding. Hopefully, after reading this article, you've learned how to troubleshoot and fix this error.
