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

Pomoc pśepytaś

Glědajśo se wobšudy pomocy. Njenapominajomy was nigda, telefonowy numer zawołaś, SMS pósłaś abo wósobinske informacije pśeraźiś. Pšosym dajśo suspektnu aktiwitu z pomocu nastajenja „Znjewužywanje k wěsći daś“ k wěsći.

Learn More

Toś ta nitka jo se archiwěrowała. Pšosym stajśo nowe pšašanje, joli trjebaśo pomoc.

couldn't load xpcom error.

  • 1 wótegrono
  • 2 matej toś ten problem
  • 4 naglědy
  • Slědne wótegrono wót cor-el

jsommer48
jsommer48
more options

After an automatic update, I got "couldn't load xpcom" error. How do I fix it?

After an automatic update, I got "couldn't load xpcom" error. How do I fix it?

Wšykne wótegrona (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Your System Details show Firefox 107.0 on Windows Vista. Are you running Firefox in compatibility mode as XP and Vista haven't been supported for quite some time (current minimum is Windows 7) ?

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. You need to do a clean reinstall and remove the Firefox program folder to ensure that all files are replaced. You may have to disable security software temporarily in case the problem persists.