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

Couldn't load XPCOM

  • 1 svar
  • 32 har dette problemet
  • 24 views
  • Siste svar av guigs

more options

After following Mozilla instructions, I can't open internet anymore. It says "Couldn't load XPCOM".

After following Mozilla instructions, I can't open internet anymore. It says "Couldn't load XPCOM".

All Replies (1)

more options

Profile Manager - Create, remove or switch Firefox profiles try opening Firefox with a new profile, if you get the same error please try a clean reinstall:

  • 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

Did this help?