diff --git a/src/Umbraco.Web.UI/config/UrlRewriting.Release.config b/src/Umbraco.Web.UI/config/UrlRewriting.Release.config
index ce7076bf96..754643cf30 100644
--- a/src/Umbraco.Web.UI/config/UrlRewriting.Release.config
+++ b/src/Umbraco.Web.UI/config/UrlRewriting.Release.config
@@ -2,32 +2,9 @@
 <urlrewritingnet xmlns="http://www.urlrewriting.net/schemas/config/2006/07">
   <rewrites>
     <!-- 
-				Urlrewriting.Net is a cool tool, what can make your urls look nice.
-				The rewriting is controlled with regular expressions. To get more help
-				look at http://www.urlrewriting.net/. 
-				
-				Remember to read the manual! 
-				http://our.umbraco.org/wiki/recommendations/recommended-reading-for-web-developers
-
-				The sample below rewrites a url from 
-				"/product/someproductid.aspx" to 
-				"/product.aspx?productid=someproductid" 
-				
-				The user will not see the rewritten path! The page that will be 
-				loaded from umbraco will instead be:
-				"/product.aspx?productid=someproductid" 
-										
-				<add name="produktidrewrite" 
-					virtualUrl="^~/product/(.*).aspx" 
-					rewriteUrlParameter="ExcludeFromClientQueryString" 
-					destinationUrl="~/product.aspx?productid=$1" 
-					ignoreCase="true" />
-					
-				This sample is usefull for a productpage, where the product comes from a 
-				dynamic datasource, e.g. a database. The querystring "productid" can be loaded
-				from the template, into a macro, that then loads the product!
-				
-				Any bugs or problems with the rewriter, contact Anders/Duckie
-			-->
+		URLRewriting.net is obsolete and will be removed from Umbraco in the future.
+		If you want to do rewrites, make sure to use IIS URL rewrite: https://www.iis.net/downloads/microsoft/url-rewrite
+		The advantage of using IIS rewrite is that it is much faster, much less CPU intensive and much less memory intensive.
+	-->
   </rewrites>
 </urlrewritingnet>
diff --git a/src/Umbraco.Web.UI/config/UrlRewriting.config b/src/Umbraco.Web.UI/config/UrlRewriting.config
index 108f53bf5e..754643cf30 100644
--- a/src/Umbraco.Web.UI/config/UrlRewriting.config
+++ b/src/Umbraco.Web.UI/config/UrlRewriting.config
@@ -2,32 +2,9 @@
 <urlrewritingnet xmlns="http://www.urlrewriting.net/schemas/config/2006/07">
   <rewrites>
     <!-- 
-				Urlrewriting.Net is a cool tool, what can make your urls look nice.
-				The rewriting is controlled with regular expressions. To get more help
-				look at http://www.urlrewriting.net/. 
-				
-				Remember to read the manual! 
-				http://our.umbraco.org/wiki/recommendations/recommended-reading-for-web-developers
-
-				The sample below rewrites a url from 
-				"/product/someproductid.aspx" to 
-				"/product.aspx?productid=someproductid" 
-				
-				The user will not see the rewritten path! The page that will be 
-				loaded from umbraco will instead be:
-				"/product.aspx?productid=someproductid" 
-										
-				<add name="produktidrewrite" 
-					virtualUrl="^~/product/(.*).aspx" 
-					rewriteUrlParameter="ExcludeFromClientQueryString" 
-					destinationUrl="~/product.aspx?productid=$1" 
-					ignoreCase="true" />
-					
-				This sample is usefull for a productpage, where the product comes from a 
-				dynamic datasource, e.g. a database. The querystring "productid" can be loaded
-				from the template, into a macro, that then loads the product!
-				
-				Any bugs or problems with the rewriter, contact Anders/Duckie
-			-->
+		URLRewriting.net is obsolete and will be removed from Umbraco in the future.
+		If you want to do rewrites, make sure to use IIS URL rewrite: https://www.iis.net/downloads/microsoft/url-rewrite
+		The advantage of using IIS rewrite is that it is much faster, much less CPU intensive and much less memory intensive.
+	-->
   </rewrites>
-</urlrewritingnet>
\ No newline at end of file
+</urlrewritingnet>