Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Firefox refuses to start, saying that it's already running, must restart window in the end.

FelixTan
FelixTan
more options

This error message shows up: "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 message shows up: "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."

Chosen solution

Please upgrade your browser to Firefox 8 and check

Read this answer in context 👍 0

All Replies (1)

Swarnava Sengupta
Swarnava Sengupta
  • Locale Leader
more options

Chosen Solution

Please upgrade your browser to Firefox 8 and check