Penetration of sunlight through the window glass

[segamega90]

I have the following problem.
1) I created a window model for my project.
2) The window looks great and it is transparent.
3) When rendering (using a plugin or standard tools), the glass looks transparent. But the window does not let in sunlight from the open world.

That is, I see everything that happens through the glass. The sun is shining but the light does not penetrate into the room. I don't see shadows from the window frame to the wall, etc. If I use a standard window model, the glass is transparent and also lets in sunlight.
What can I do?

link download my model DAE in RAR archive studioslash.ru/windiw.rar

[segamega90]

I think something is wrong with my model.
I just downloaded a window model from a random site, in 3ds format. This window lets in light perfectly.
studioslash.ru/window2.rar
But I only have a model in dae format, I work in blender and I can't create a model in 3ds format.
Could you help me and convert my dae model to a 3ds format with a transparent window, as in the window2 model
studioslash.ru/windiw.rar