"Certificate Error" when accessing Cisco router through SDM

This is just a minor annoyance, but I'll ask just the same. When I
access my Cisco 2801 through a web browser (IE, in my case), using a
https session, I get the message "Certificate Error". I just click
through to continue. Now, I know I can click on the error button and
manually add the certificate to my browser, but is there any way to
assign a certificate from my PKI to make this error go away
permanently?

I added a certificate using the SCEP wizard, but I take it that that
certificate is not the certificate used by SDM. Oh, and I've tried
using the FQDN when running the browser, but that doesn't do it,
either.

Like I said, not really an issue, but I'd like to resolve it just the
same. Thanks.

 

You get the error because it is a self-signed certificate, which means that
it was not issued from a certificate authority that is trusted by your web
browser. The error is not an "error" but a popup from your browser asking
you if you trust the certificate that it is being presented. You have three
options:
1) Ignore and click through the popup
2) Create a new certificate from you own internal certificate authority for
the device and use that one instead of the self-signed certificate. If you
don't have an internal certificate authority, you would need to create one,
and then install the trusted root certificate from this certificate
authority on all your web browsers. You only need to do this once, and then
you could create certificates internally for anything that needs a
certificate (like internal web sites secured via SSL).
3) Pay a fee and have a certificate for each device issued by one of the
trusted root certificate authorities such as Verisign.