IIS Express not stopping when debug session ends

Question

All of a sudden IIS Express no longer stops when I stop debugging a web site in Visual Studio 2017.

I'm not sure when this behaviour started, but I have the following setup:

• Visual Studio 15.5.2 (Has been repaired)
• IIS Express 10.0 x64 (Reinstalled)
• An ASP.Net Core 2 project targeting net461
• I have disabled "Enable edit and continue" in Tools -> Options -> Debugging -> General

Not sure when this started happedning, maybe when I updated to the lastest VS version.

What more can I try?

Answer 1

If Enable Edit and Continue is unchecked Then IIS Express stays running even after debugging is stopped.

You can uncheck it if you want here:

Right click your project » click Properties » select the Web tab » Enable Edit and Continue checkbox

Answer 2

For .net Core web projects in Visual studio 2017

If you add:

<AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel> 

or:

<AspNetCoreHostingModel>OutOfProcess</AspNetCoreHostingModel> 

in the first PropertyGroup in your project.csproj config you will alter the iis express behavior.

• InProcess will kill iis express after debug.

• If the setting is missing or set to OutOfProcess iis express will keep the process running.

- This setting updates the .vs\config\applicationhost.config of your solution and hostingModel="InProcess" will be added/removed to the iis express launch config for the project.

  <aspNetCore processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" hostingModel="InProcess" /> 

(You don't need to change the applicationhost.config, only for reference)