HTTP/1.1 401 Unauthorized OWA

I've been trying to get rpc over http to work.

So I installed a SelfSSL cert in default web site > rpc > secure
commuincations > server certificate

I only got so far as to get OWA to work with http and https

I removed the certificate by going to default web site > properties >
directory security > secure commuincations > server certificate and removed
the certicate.

Now the secure communications button is "greyed out" on rpc as well as all
the other child object under "default web site"

Now OWA does not work and I get a "HTTP/1.1 401 Unauthorize" when I enter
http://10.0.1.5/exchange

Any clues as to what I need to do?

Thanks

Scott Houser