Cassette + Web Forms: This operation requires IIS integrated pipeline mode

Question

I have a working ASP.NET Web Forms application and after installing the Cassette.Aspnet NuGet package I got the following error on first run:

This operation requires IIS integrated pipeline mode.

What should I do?

Answer 1

If you are using Cassette 2, you need to add the following line to your web.config file:

<cassette rewriteHtml="false" />

This will solve this issue, and also make the development web server happy.

---

That solution was found on the following Github thread.