@Uldis: Blank White Fuse Preview Window. No errors.
FAQ has the answer:
Local preview does not start on Windows
If the console output contains GL_VERSION: 1.1.0 and GL_RENDERER: GDI Generic the problem is most likely missing / outdated OpenGL drivers. Upgrade to the most recent drivers for your graphics adapter and try again.
This problem can also be triggered by driver issues under Windows 10 specific to the Intel HD Graphics 2000 / 3000 / 4000 graphics adapters. In this case you will not be able to do local preview with instant updates, but we can still test your app on the PC by doing a regular build: fuse build -t=dotnetexe --run
Is there an OpenGL difference between build and preview? Is uno build -r -tdotnet or fuse build -t=dotnetexe --run running as OpenGL?