diff --git a/web.config b/web.config
index 06e4cbe6eb876a0c677a62befb636c77f749732f..5211893719c193dedd56b50118eebf7f8720c9a8 100644
--- a/web.config
+++ b/web.config
@@ -29,6 +29,9 @@
         <rule name="Force simple error message for requests for non-existent favicon.ico" stopProcessing="true">
           <match url="favicon\.ico" />
           <action type="CustomResponse" statusCode="404" subStatusCode="1" statusReason="File Not Found" statusDescription="The requested file favicon.ico was not found" />
+          <conditions>
+            <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
+          </conditions>
         </rule>
 
     <!-- To redirect all users to access the site WITH the 'www.' prefix,