HTTP 400 Archives : Binary Bits https://blog.binarybits.net/tag/http-400/ Bits & Pieces - A blog by Kannan Balasubramanian Mon, 03 May 2021 10:50:10 +0000 en-GB hourly 1 https://wordpress.org/?v=6.9.4 IIS Express – HTTP Error 400. The request hostname is invalid. https://blog.binarybits.net/iis-express-http-error-400-the-request-hostname-is-invalid/ https://blog.binarybits.net/iis-express-http-error-400-the-request-hostname-is-invalid/#comments Sat, 02 Nov 2013 11:49:22 +0000 https://blog.binarybits.net/?p=576 The following is the fix for the error “HTTP Error 400. The request hostname is invalid” when trying to browse an IIS Express site using a different host name or IP address. 1. Exit the IIS Express instant currently running. 2. Open IIS Express’s applicationhost.config located at the following path C:\Users\<user>\Documents\IISExpress\config\applicationhost.config 3. Find the entry […]

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]]> The following is the fix for the error “HTTP Error 400. The request hostname is invalid” when trying to browse an IIS Express site using a different host name or IP address.

1. Exit the IIS Express instant currently running.

2. Open IIS Express’s applicationhost.config located at the following path C:\Users\<user>\Documents\IISExpress\config\applicationhost.config

3. Find the entry for a particular site (e.g “Test” running in port 6306) which you are developing.

e.g.

<site name="FlickrTest" id="10">
    <application path="/" applicationPool="Clr4IntegratedAppPool">
        <virtualDirectory path="/" physicalPath="E:\Projects\BB Apps\FlickrTest" />
    </application>
    <bindings>
        <binding protocol="http" bindingInformation="*:6306:localhost" />
    </bindings>
</site>

4. Replace the following

bindingInformation=”*:6306:localhost” with bindingInformation=”*:6306:*”

5. Save the file.

6. Start a command prompt in administrator mode and run the following command.

netsh http add urlacl url=http://*:6306/ user=Everyone

7. Now debug the site again and you should be able to access the url using IP address or host name.

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