Thank you, @KyubinNoKitsune
It looks like the Burnout Paradise team was aware of this and has some workarounds below that can help. There are indeed some players still playing online, too.
We've identified a potential fix for this if you are willing to do the following below:
Reinstall Visual Studio Redist 2015
Apply Windows patch KB2670838
I don't have any camera on my PC.
burnoutpr.exe is already on exception list in my Windows Firewall
I use Windows 10 and patch KB2670838 is for Windows 7, so it's kinda nonsense.
I already reintalled Visual Studio Redist 2015.
As I said before, I already tried everything that's been said in the threads.
I have to clean install my windows next month, so maybe this should fix something (I hope).
Thank you anyway.
@KyubinNoKitsune could you tell me if you are using any non-english characters (for e.g. ł, ą, ć) in your Windows profile name?
I was using an "Ã" but I already changed to a normal "A". Still crashing when I try to play online. Unless I have to reinstall the game again or change something in regedit (?) (just wondering, cuz the first version of the game run just fine, even in online mode).
Were you eventually able to find a solution that you can share with us so others might find it useful when searching?
Well, I can now play online after reinstaling my Windows 10 and Burnout Paradise Rematered. I don't really know how to fix the problem. Sorry :/