Unable to locate a Running Instance of Steam

[Elladan1 0]

Hello everybody I played a lot DayZ for years and few days ago I Downloaded it and I get This message and this in the BattleEye Console

(I already do the re-download, clean cache, verify files thing, and the right click admin at Steam.exe but still not working)

 I can't find a working solution anybody can help me ? 

 

[Just Caused 423]

Just relog in Steam.