IIS Express in visual studio 2017 crashes when debugging app and selecting file input

Question

I have a form with a file field. In VS 2017 the upload doesn’t work and it returns the error: "The program '[19000] iisexpress.exe' has exited with code 4294967295 (0xffffffff)." The upload operation when run from kills IIS Express, it basically evaporates. Any idea on how to fix this. Thanks in advance.

Answer 1

ok, found the answer here: IIS Express stops suddenly when I click on a text box in my web app.

This did the trick:

The checkbox was clear in VS 2017.