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

Just happened to me, it's because windows defender is detecting mozjs.dll as Trojan:Win32/Posilod.EB!cl and deleting it. I presume it's a false positive.

Seems to be OK in VT. 64-bit: https://www.virustotal.com/gui/file/8a1 ... 2e0c37172b 32-bit: https://www.virustotal.com/gui/file/0e9 ... 676639693b

So either it was an anomaly for some people, or it's been solved in the meantime.