I've been following this discussion thread for months now. I too have a
number of Windows 2000 SP4 Servers with Terminal Services in Remote Admin
mode behind an ISA 2000 SP2 proxy server. I still receive 0x8024401b errors
when using the Windows Update v6 web site via Remote Desktop. However, I
find that the Windows Update v6 web site works correctly when accessed
directly at the console of the same servers.

I am also vaguely aware of another workaround that involves running Windows
Update v4 instead of v6. However, I'd like to know if anyone has heard of a
plan from Microsoft to fix this apparent bug in Windows Update v6.

"Cap in hand" wrote:

> When running windows update on a server 2000 with SP4 when administering the
> server through terminal services, the security patches will not install
> failing with an error. When running windows update from the console of the
> same server, all installs Ok. Although we can work around the proplem we
> would prefer to install through terminal services. Does anybody know how to
> resolve this issue?