1. Disable “Custom error documents” by going to “Website Scripting and Security”.
2. Create a new text file with the name “web.config” that you save in the root of the site and put this content into it:
<configuration> <system.webServer> <httpErrors errorMode="Detailed" /> </system.webServer> </configuration>
3. Refresh the page and you should have the details about the asp error.