I have trouble installing Unreal Engine 4.18 as it is stuck on "please wait" during installation

I’ve tried various steps from previous threads but none have seemed to work so far, and the same problem occurs for all the previous versions of Unreal engine.

Hi there. I´d appreciate some help on the same issue. Just got a new PC to keep using UE4. Launcher seams to install ok. When I choose add version or install engine it gets stuck presenting the “please wait” message within the box. Current version available to install is 4.18.2. My dxdiag is attached.link text