@leokhoa I am not behind a proxy, tried to add one anyway, didn´t work.
Changed the node url too.
The Laragon.log is empty.
I get no error message, just this window and nothing happens.

I installed Laragon 4.0.2 but i cannot add e.g. node or git via the Tools > Quick Add feature. It is not downloading the packages. I didn´t test all but phpmyadmin or yarn are installing.
I am using Win10 64bit v1809. I tried disabling UAC, that didn´t help. Any ideas?