Error 5:740 HELP!

As the topic says, i experience Error 5:740 when i try to Launch Heroes of the Storm.
I’ve tried everything so far, Reinstalling Battle-net, Reinstalling the game itself, Running the app as administrator for both Shortcuts and Task Manager, repairing the game. And of course after every step i restarted my laptop.
At first, running as administrator worked only once, but when i closed the app and started it up again - the error occured as well. Now nothing works. I’ve searched for a solution, but nothing i havent tried so far.
Please, HELP!

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