Cant do a crosspage postback because .aspx is missing from my page names

Question

In my current project which is quite large, I am missing my page extensions when visiting my pages in my browser. I created a fresh Web Forms project and it works just fine.

Without page extensions I can not do cross page postbacks.

How do I turn extensions on or off? Is this done on the webconfig, IIS express, or my browser?

Answer 1

FriendlyUrls was the issue. Removed in via nuget.