Merge pull request #1396 from pjanotti/patch-3

Multiple apps in the same IIS App Pool can't use appSettings for configuration

Author: mbechtold-splunk

gdi/get-data-in/application/otel-dotnet/instrumentation/instrument-dotnet-application.rst

@@ -110,6 +110,9 @@ Windows
          .. note:: 
             If ``OTEL_SERVICE_NAME`` is not set for a web application hosted in IIS, the inferred name based on the site name and virtual directory path is used.
 
+         .. note:: 
+            If multiple applications are running in the same IIS Application Pool do not use the ``appSettings`` block of the web.config file to configure any environment variable. Let the instrumentation infer the name and use the Application Pool environment variables configuration, see below, to set the resource attributes (which will be shared by all applications in the Application Pool).
+
          After modifying the web.config file, restart IIS:
 
          .. code-block:: powershell