Hi Kurian,
You can Go to Server Settings>>Settings>> Missing Template Handler and setup the same.
To use the missing template handler with IIS, the Custom Error page of your website must be configured to use the page. For this example, we'll assume a directory name of /errorpages and a file named missingtemplate.cfm. Therefore, the path to the missing template handler will be /errorpages/missingtemplate.cfm.
The steps below explain how to configure IIS to use the template for the Custom Error page:
1. Right-click on the website in the IIS Management Console, then select Properties.
2. Select the Custom Errors tab.
3. Select the 404 in the HTTP Error column and click Edit Properties...
4. Select URL from the Message type dropdown and enter /errors/missingtemplate.cfm in the URL text box.
5. Click OK.
6. Right-click on the website again and select Properties.
7. Select the Home Directory tab and click the Configuration... button.
8. Select .cfm from the list and click the Edit button.
9. Check the "Check that file exists" checkbox.
10. Restart IIS and the ColdFusion Server.
Regards,
Anit Kumar