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Couldn't load XPCOM on Windows 11

Firefox Launch failure
TyDraniu replied 9 months ago
goofusrufus
goofusrufus

When I open Firefox in Windows 11 a small window appears that reads, "Firefox Couldn't load XPCOM. I have not found any solutions to stop this that work. Will Mozilla fix this?

When I open Firefox in Windows 11 a small window appears that reads, "Firefox Couldn't load XPCOM. I have not found any solutions to stop this that work. Will Mozilla fix this?
Attached screenshots

All Replies (3)

TyDraniu
TyDraniu
  • Top 25 Contributor

You have to download full installer from https://www.firefox.com/download/all and install it.

goofusrufus
goofusrufus Question owner

Is a full installer a Windows 64bit or a Windows 64bit MSI?

TyDraniu
TyDraniu
  • Top 25 Contributor

May be Windows 64bit. More important is that it should be more than 50MB.