Hi, I'm an engineer working for Mozilla on Firefox. We recently noticed we'd been getting crash reports indicating Firefox crashes during env_logger initialization. Upon debugging, we found out it was caused by a failure of BCryptGenRandom, that was introduced by #84096.

Almost all reports are from Windows 7 32-bit. We don't know the reason why BCryptGenRandom failed. Possibly the cryptography settings in the registry was corrupted and the process couldn't find the module.

To mitigate this crash, can you add a fallback logic, using RtlGenRandom if BCryptGenRandom fails for whatever reason. Probably we can limit it to Win7.

Here's the link to the tracking bug in Bugzilla.

https://bugzilla.mozilla.org/show_bug.cgi?id=1754490