I don't remember what I did. I had been putting in an ASP page and kept getting errors with file uploads which go through this new ASP page. The permissions were wrong on the upload folder. I fixed that BUT...
Just to go to the company's home page, you get the certificate dialog box.
After you click the Yes button, you are warned that this page has secure and insecure data -- do you want to proceed...
This is a SBS with Exchange installed and it uses SSL. It was working fine. You could go to the home page without certificate requests. If you went to the Company\Exchange page--then you got prompted.
I did pull up IIS and verify that the properties on the \inetpub\wwwroot (the default server) were Anonymous & Integrated, but I am not sure what else I may have done. I have been working on this too long and too late.