Since the release of Umbraco v9 and the change of the underlying web framework that is decoupled from the webserver, the way that you configure rewrites has changed as well.
Instead of the URL Rewriting extension in IIS you can use the URL Rewriting Middleware in ASP.NET Core , which needs to be added to your project startup code first.
If you are running Umbraco v9+ on IIS you can still add a web.config
file to configure IIS features such as URL rewrites.
Make sure to check the official URL Rewriting Middleware in ASP.NET Core documentation for more information about when you should or should not use the URL Rewriting Middleware.
Using the URL Rewriting MiddlewareTo use rewrites with Umbraco v9+ you have to register the middleware in your Program.cs
by using the UseRewriter
extension method and then configure the rewrite options.
Create an IISUrlRewrite.xml
file in the root of your project (next to your Program.cs
file) containing:
<?xml version="1.0" encoding="utf-8" ?>
<rewrite>
<rules>
<rule name="Redirect umbraco.io to preferred domain" stopProcessing="true">
<match url=".*" />
<conditions>
<add input="{HTTP_HOST}" pattern="\.umbraco\.io$" />
<add input="{REQUEST_URI}" pattern="^/App_Plugins/" negate="true" />
<add input="{REQUEST_URI}" pattern="^/umbraco" negate="true" />
</conditions>
<action type="Redirect" url="https://example.com/{R:0}" />
</rule>
</rules>
</rewrite>
In the Program.cs
file you can add the URL Rewriting Middleware before the call to app.UseUmbraco()
and use AddIISUrlRewrite
to add the rewrite rules from the XML file:
using Microsoft.AspNetCore.Rewrite;
var rewriteOptions = new RewriteOptions()
.AddIISUrlRewrite(builder.Environment.ContentRootFileProvider, "IISUrlRewrite.xml");
app.UseRewriter(rewriteOptions);
// This line is needed for the rewrites to take effect.
app.UseStaticFiles();
On Linux, make sure to place the app.UseStaticFiles()
after the app.UseUmbraco()
statements for the redirect to work as intended.
In your csproj file add the XML file to a new item group and set CopyToOutputDirectory
to Always
:
<ItemGroup>
<Content Include="IISUrlRewrite.xml">
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
</Content>
</ItemGroup>
On Umbraco Cloud the item group needs to be set to <CopyToPublishDirectory>Always</CopyToPublishDirectory>
for the file to be published to your deployed site.
RewriteOptions
has a number of "shortcut" methods to implement commonly used rewrites including:
AddRedirectToNonWwwPermanent()
AddRedirectToWwwPermanent()
For more details and other examples, take a look at the URL Rewriting Middleware in ASP.NET Core and RewriteOptions Class documentation.
Examples of rewrite rulesIf you are looking for additional inspiration or examples for creating IIS Rewrite rules, these external resources are a great starting point:
The following rule removes any trailing slashes from the URL.
<rule name="Remove trailing slash" stopProcessing="true">
<match url="(.*)/+$" />
<conditions>
<add input="{REQUEST_URI}" pattern="^/umbraco" negate="true" />
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
</conditions>
<action type="Redirect" url="/{R:1}" />
</rule>
Ensure Umbraco does not add a trailing slash by setting AddTrailingSlash
to false
in your RequestHandler settings.
The following rule ensures your site only runs on HTTPS:
<rule name="Redirect to HTTPS" stopProcessing="true">
<match url=".*" />
<conditions>
<add input="{HTTPS}" pattern="^OFF$" />
<add input="{HTTP_HOST}" pattern="^localhost(:[0-9]+)?$" negate="true" />
</conditions>
<action type="Redirect" url="https://{HTTP_HOST}/{R:0}" />
</rule>
Example: Redirect Non-www to www
The following rule redirects traffic from non-www to www (excluding the Umbraco Cloud project hostname):
<rule name="Redirect to www prefix" stopProcessing="true">
<match url=".*" />
<conditions>
<add input="{HTTP_HOST}" pattern="^www\." negate="true" />
<add input="{HTTP_HOST}" pattern="^localhost(:[0-9]+)?$" negate="true" />
<add input="{HTTP_HOST}" pattern="\.umbraco\.io$" negate="true" />
</conditions>
<action type="Redirect" url="https://www.{HTTP_HOST}/{R:0}" />
</rule>
Example: Remove the .aspx Extension
The following rule redirects .aspx
URLs to their extensionless counterparts.
<configuration>
<system.webServer>
<rewrite>
<rules>
<!-- Redirect .aspx URLs to their extensionless counterparts -->
<rule name="Remove ASPX extension" stopProcessing="true">
<match url="^(.*)\.aspx$" />
<conditions logicalGrouping="MatchAll">
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
</conditions>
<action type="Redirect" url="{R:1}" redirectType="Permanent" />
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>
Example: Custom Rewrite Rules for Umbraco Cloud
An example configuration to help ensure your custom rules integrate properly:
<?xml version="1.0" encoding="utf-8"?>
<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
<location path="." inheritInChildApplications="false">
<system.webServer>
<rewrite xdt:Transform="Insert">
<rules>
<!-- Add your custom rules here -->
</rules>
</rewrite>
</system.webServer>
</location>
</configuration>
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