I use:
-ZCM10.2 on the server
-WinXP-SP3 on one client (fully patched without any
software installed)

If I disable the firewall on the pc, I can
deploy the latest zen agent. Everything is ok.

If I enable the firewall on the pc, I receive the
following error message: "Error: Credentials invalid.
Please ensure that classic file sharing is enabled on the

I checked "classic file sharing" on the pc and it is

Now my question: what ports must I unblock on the
firewall to deploy the zen agent?

I saw a lot of articles here in the forum concerning
the issue of the firewall, but none of these
articles solved my problem.

Any ideas yet?

Thanks and best regards