.NET is a powerful and flexible platform with many mechanisms that can significantly increase productivity. A limited understanding of its details, however, can prove to be fraught with consequences. During my work, I have seen many situations where something did not work as expected. It turned out. that the information on blogs or courses was 99% correct, and I was hitting that forgotten 1%. On this presentation a few such cases. I will also debunk few really popular interview questions which we used to answer wrong.