'Error: Connection Error' when connecting to WSUS 3.0 via ..

Hi there,

I get the above error message when I try to open the WSUS 3.0 console on the
WSUS server (W2K3). It worked fine before.

The problem occurred when I was testing on this production server (stupid
me, I know, I know). I added tsweb for testing purposes on the same machine.
Normally no problem, but I did more. I changed security settings in IIS to
tighten the security. Actions done:
- connect to IIS
- go to Default Web Site properties
- go to Directory Security and choose Edit in the ‘Authentication and access
control’ section.
- in this screen I deselect ‘Enable anonymous access’

From this moment I was not able to use the default web site, which contains:
- default website
- wsus
- tsweb

I reversed the action by selecting ‘Enable anonymous access’. Later I
discovered that I had to re-enable security via the Home Directory tab as
well. I had to enable Read and Directory browsing access.
By doing this, tsweb and the default website where accessible again. But not
WSUS. I get the error I specified above.

I think it has to do with IIS, or ntfs directory security, but I have not
enough IIS knowledge to solve this issue. Is somebody able to push me into
the right direction?

At the moment I’m unable to control my WSUS environment.

Sincerely,
Yuri