Unreal Engine Freeze on Build Start. Please help

Hello! I just started learning UE4 and encountered a problem. Even in the simplest level like this:

Whenever I click Build I get a window like the one in this image:

No matter how long I leave this running, doing nothing else on the PC, nothing changes. Same error i have in previous versions 4.16/4.15.

SwarmAgent window looks like this:

I think, its not a hardware problem, cause i have dualXeon E5-2680 2.4GHz workstation, with Nvidia Geforce1070.

Please help me. I don’t know what to do with this.
Thanks.