I've got a site that is using an Execute URL in the 403.4 error page slot that calls a page named forcessl.aspx. Here's the contents of the file:

strWork = Replace(strQUERY_STRING, "http", "https") strWork = Replace(strWork, "403;", "") strWork = Replace(strWork, "80", "") strSecureURL = strWork Response.Write(strSecureURL) Response.Redirect(strSecureURL) Catch ex As Exception End Try End If %>

This particular site gets a 401.1 error if https:// is not added to the URL. I have several other sites using the same method that work fine and this one mirrors those in all ways that I can tell (folder permissions, etc). This new site is just a subdomain of the same domain that the other sites are using. The main domain has a wildcard SSL cert.

From Microsoft's documentation, here is the meaning of the errors:


HTTP Error 403.4 - Forbidden: SSL Is Required To View This Resource


HTTP Error 401.1 - Unauthorized: Access is denied due to invalid credentials

  • You could probably easily fix this with a rewrite rule to redirect error pages to https. I think that is what you are trying to accomplish?
    – Frank
    Commented Sep 22, 2014 at 12:38
  • I'd never heard of 403.4 or 401.1 errors. The decimal point on them seems to be a Microsoft invention for keeping different reasons for those errors straight. I've added information about the errors to the question. Commented Nov 14, 2014 at 15:27

1 Answer 1


I finally found the solution to this problem.

When setting up the site I had done everything but put the site in the bindings for the domain. I hadn't added the subdomain.mysite.com to the bindings for port 80.

I had forgotten this because since I was forcing everything through port 443 with a rewrite, I didn't think I needed to add it. In digging around for the solution I saw that all the other subdomains were in the bindings and this one wasn't.

A simple little thing caused 6 months of frustration. What was weird is that it worked for some people, but not for others if you tried to access it through HTTPS.

Always learning.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.