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.

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

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

Firefox is blocked on my computer. How do I fix this?

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

Wuorir
Wuorir
more options

When I click on Firefox, a message comes on stating "can't load XPCOM." I tried turning off the firewall and numerous scans and troubleshooter tools to no avail. How do I fix this? Thank you for your time.

When I click on Firefox, a message comes on stating "can't load XPCOM." I tried turning off the firewall and numerous scans and troubleshooter tools to no avail. How do I fix this? Thank you for your time.

All Replies (1)

philipp
philipp
  • Moderator
more options

hi Wuorir, this is a problem that is usually caused by a windows system restore. please first try a clean reinstall of firefox:

  • download the full firefox setup file from https://www.mozilla.org/firefox/all/
  • uninstall firefox on the machine
  • manually delete all remaining files in the firefox program folder, which usually resides in C:\Program Files (x86)\Mozilla Firefox\
  • reinstall firefox

in case this did not help, the xpcom error message at startup might also be caused by third-party security tools: http://kb.mozillazine.org/Browser_will_not_start_up#.22Couldn.27t_load_XPCOM.22_error