url rewrite - add www

Question

trying to setup a simple rewrite rule to direct people going to domain.com to www.domain.com. The following is web.config:

 <rewrite>
        <rules>
            <rule name="CanonicalHostNameRule1">
                <match url="(.*)" />
                <conditions>
                    <add input="{HTTP_HOST}" pattern="^www\.domain\.com$" negate="true" />
                </conditions>
                <action type="Redirect" url="http://www.domain.com/{R:1}" />
            </rule>
        </rules>
    </rewrite>

When tested it doesn't work, still gives a 404 when browsing to domain.com and internal server error when browsing to www.domain.com. Error logging gives the following:

HTTP Error 500.19 - Internal Server Error
The requested page cannot be accessed because the related configuration data for the page is invalid.

Detailed Error Information:
Module	   IIS Web Core
Notification	   Unknown
Handler	   Not yet determined
Error Code	   0x8007000d
Config Error	   Configuration file '\\?\C:\DWASFiles\Sites\domain\VirtualDirectory0\site\wwwroot\web.config' does not contain a root <configuration> tag
Config File	   \\?\C:\DWASFiles\Sites\domain\VirtualDirectory0\site\wwwroot\web.config

---

ADTU Enterprises

Answer 1

Hi,

Try this:

<add input="{HTTP_HOST}" pattern="^domain\.com$" negate="true" />

Thanks,

---

QinDian Tang
MSDN Community Support | Feedback to us
Develop and promote your apps in Windows Store
Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Answer 2

tried that, but same problem still persists.

---

ADTU Enterprises

Answer 3

Hi,

Here is the solution for having both domain names (domain.com and www.domain.com):
http://serverfault.com/questions/470888/azure-hosted-website-gives-404-error-when-domain-name-is-preceded-by-www

Thanks,

---

QinDian Tang
MSDN Community Support | Feedback to us
Develop and promote your apps in Windows Store
Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Answer 4

I know this is an old thread but it still shows up in search results..

here is how i would do this (and have done a www 301 many times before):

 <rewrite>
        <rules>
            <rule name="www 301">
                <match url="(.*)" ignoreCase="true" />
                <conditions>
                    <add input="{HTTP_HOST}" pattern="^domain\.com$" />
                </conditions>
                <action type="Redirect" url="http://www.domain.com/{R:1}" redirectType="Permanent" />
            </rule>
        </rules>
    </rewrite>

I always try to use descriptive names for my rules, it is not important but i feel better.

I always use the ignoreCase parameter

There is no need for the Negate parameter since we are targeting the url we want to redirect and not the url we dont want to redirect

the redirectType="permanent" is also better, that way crawlers will always know that the redirect is permanent and index your website accordingly.