How to stop web.config restating the application automatically on changes

This information has been drawn from (and is currently untested): http://stackoverflow.com/questions/613824/how-to-prevent-an-asp-net-application-restarting-when-the-web-config-is-modified/31470150#31470150

For the primary source see: https://support.microsoft.com/en-us/help/911272/fix-asp.net-2.0-connected-applications-on-a-web-site-may-appear-to-stop-responding and https://msdn.microsoft.com/en-us/library/e1f13641(v=vs.100).aspx

Add  fcnMode="Disabled" to web.config in system.web httpRuntime.

   <system.web>

       <httpRuntime

           targetFramework=... >

           ...

           fcnMode="Disabled"

.../>

   </system.web>

Or

Change DisallowRotationOnConfigChangeto true in the Advanced Settings of the application pool in IIS.