Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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
Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.
Okugcinwe kunqolobane

how to connect again?

I-Firefox Launch failure
Konstantina Papadea replied 6 izinyanga ezidlule
vilma.rocha@hotmail.fr
vilma.rocha@hotmail.fr

What means "couln't load XPCOM"?

What means "couln't load XPCOM"?

All Replies (1)

Konstantina Papadea
Konstantina Papadea
  • Abanegalelo Abangama-25 Abaphambili
  • Umongameli
Mozilla Staff

Hey there, it looks like you will need to re-install Firefox. An error message about XPCOM missing or about platform version usually happens because of a failed Firefox update that left you with a mixture of old and updated files in the Firefox program folder. This can happen in case security software was keeping a handle of some of the files in the Firefox program folder preventing Firefox from replacing all the files. Kudos to cor-el for the answer to this, you can see it also here: https://support.mozilla.org/en-US/questions/1229392

Okulungisiwe ngu Konstantina Papadea