IIS 404 page not working

 

1. Check the IIS Settings:

   • Ensure that the website is running and the application pool is started.
   • Verify the bindings for the site are correct (e.g., hostname, port).

2. Custom Error Pages:

   • Check your web.config file for custom error page settings. It should look like this:

     xml
     <system.web>
       <customErrors mode="On" defaultRedirect="~/Error.aspx">
         <error statusCode="404" redirect="~/404.aspx" />
       </customErrors>
     </system.web>
     

3. Static vs. Dynamic Content:

   • Ensure that static content is enabled in the IIS settings. Go to the site's Features View, double-click on "MIME Types," and check if the required types are configured.

4. File Existence:

   • Make sure the requested file or directory exists in the specified location.

5. Permissions:

   • Check the folder permissions to ensure that the IIS user (usually IIS_IUSRS) has read access to the directory and files.

6. Logging:

   • Enable logging for your site in IIS. Check the logs for specific error messages that can give you more insight.

7. Failed Request Tracing:

   • Enable Failed Request Tracing in IIS to get detailed information about what is causing the 404 error.

8. Recycling Application Pool:

   • Sometimes recycling the application pool can resolve temporary issues.

After going through these steps, if the issue persists, please provide more details about your configuration or any error messages you see.