Same issue for me, the error was very deceptive as it wasn't related to window rendering at all.
The solution for me was removing the network-wide DNS block on the known tracking link, fpt.microsoft.com.
The login page on the launcher reaches out to fpt.live.com, which then CNAMEs to the other domain, if it can't reach the tracking link, it throws a misleading error and refuses to continue.
I hope this solution works for you too.
"Versions don't matter" wow, quote of the month right there.
But ok, I guess these particular sounds aren't quite added yet.
@Sonic the sounds should be added already, WAI only for Minecraft 15w43a - Minecraft 15w46a, these sounds should exist in 15w49a
Issue referenced is not for this version.
Sounds Reference:
https://www.youtube.com/watch?v=r96qhrEsIOA
https://www.youtube.com/watch?v=oyTAVUUzvUc
You should still be able to log in even if you don't have a working credential manager, it just wont save the login token for next time.
Your issue may actually be related to MCL-24812