Browser Support • Re: "Couldn't load XPCOM" - Browser is completely bricked.

Also, it seems the antivirus team at Microsoft made some big mistakes. Another false positive nuked DigiCert root certificates breaking trust chains on many systems. https://www.digicert.com/blog/microsoft ... as-malware

Yep, I actually did hit that issue (even though Pale Moon and UXP software was never flagged on my system). Interestingly, even Microsoft's own Copilot admits that Defender often has false positives and told me before this was public knowledge that Defender got it wrong and those root certificates were probably fine, even offering to tell me how to add them back after Defender removed them.