Hi, sorry for my bad english
if i can help you, i solve the error with this method
This is in my language Italian.
Close all the app like battle.net etc etc
Windows — Run ---- C:\ProgramData/
3)Erase Battle.net folder
4)Set all the app in “Run as administrator”
5)Open Battle.net ---- click Install the game ( dont worry, need few minutes)
obligado! gracias! merci! vielen danke! Thank you so much!
I’m from Japan. could not find solution until today!
you are so great and valuable super star!
thanks a lot!
now NO 00012 error!!!
very sad information.
again, after re-start PC, error occur again.
same 00012 and could not start.
delete all related file and folders but could not repair.
need another solution. please help!
what a bad system…