This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

Firefox will not reopen

  • 1 antwoord
  • 1 het hierdie probleem
  • 1 view
  • Laaste antwoord deur Scott

more options

Message: Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window.

Windows 11 version 21H2, build 22000.434

Message: Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window. Windows 11 version 21H2, build 22000.434

All Replies (1)

more options

Ok found the Parent.Lock file (not easily) and deleted it. Why is this still happening after 6-7 years?