Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Zoeken in Support

Vermijd ondersteuningsscams. We zullen u nooit vragen een telefoonnummer te bellen, er een sms naar te sturen of persoonlijke gegevens te delen. Meld verdachte activiteit met de optie ‘Misbruik melden’.

Learn More

Deze conversatie is gearchiveerd. Stel een nieuwe vraag als u hulp nodig hebt.

I receive messages that say Firefox is already running and I have to close the old version. How do I do this?

ppmaslow
ppmaslow
more options

What do I do when I seem to have an older version and a new version of Firefox on my computer? I receive a message: "Firefox is already running. You have to close the older version." How do I do this? Please help. [email removed from public]

What do I do when I seem to have an older version and a new version of Firefox on my computer? I receive a message: "Firefox is already running. You have to close the older version." How do I do this? Please help. [email removed from public]

Bewerkt door James op

Alle antwoorden (1)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
more options

Hello, on Windows 7, you can check for and terminate hidden applications using the Task Manager -- Ctrl+Shift+Esc

Of course, be careful not to terminate any program where you have unsaved data or transactions in process.

Does the "Processes" tab show any "firefox.exe" processes running that do not appear on screen?

If not, it could be a problem with a local file.