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!

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.

unable to connect to firefox

  • 1 antwoord
  • 3 hebben dit probleem
  • 4 weergaven
  • Laatste antwoord van cor-el

more options

I click on Firefox icon & get an error of "This application has failed to start because plc4.dll was not found". I don't want to really re-install as I want to keep my bookmarks. Is there anyway around this?

I click on Firefox icon & get an error of "This application has failed to start because plc4.dll was not found". I don't want to really re-install as I want to keep my bookmarks. Is there anyway around this?

Alle antwoorden (1)

more options

Do a clean (re)install and delete the Firefox program folder (C:\Program Files\Mozilla Firefox\).

Download a fresh Firefox copy and save the file to the desktop.

Uninstall your current Firefox version, if possible.

  • Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you will also lose your personal data like bookmarks and passwords from profiles of other Firefox versions.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

Your bookmarks and other profile data are stored elsewhere in the Firefox Profile Folder and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.