terminated dota2 and steam process

when i open dota2 with ensage the dota2 game poped up but sec later the dota2 shut down and ensage shows terminated dota2 and terminated steam process how to fix? hurry

the process stops when core waiting for auth idk how to fix

@dq2010 said:

are you sure, you not using steam beta?

About Core Waiting for auth - it's knowing issue, you need try till it load.