http 403.4 error when using https

I'm getting the http error 403.4 - Forbidden: SSL is required to view the resource error using IIS6, even though the url starts with https.

It's a classic asp site, that used to work until the path to the files was changed. The path had to be changed because the site had to be u开发者_Python百科pgraded. After getting the error; putting back the original path doesn't either.

Does anyone have any idea what I should check to resolve the above mentioned error?

Try following Configuring SSL on a Web Server or Web Site (IIS 6.0) from Microsoft. It specifically mentions the error you get:

If you set your Web site to require SSL, as in step 6 above, and you have not completed setting up SSL for the site, then users browsing your site will receive this error: "HTTP Error 403.4 - Forbidden: SSL is required to view this resource." To avoid this condition, either complete all the steps in the list above, or go back and clear the Require Secure Channel (SSL) check box (see step 6).