We had the same problem, and the solution was:

TSA500 requires IPX to authenticate to the filesystem on the console.

You will have the same effect with scrsaver.nlm. Trying to unlock, it will 
check your rights to the server object, which will fail without IPX.

Regards,

Jörg



On Wednesday 14 March 2001 22:20, you wrote:
> We have the same problem with one of our Netware 5.0 servers after we
> upgraded the Service Pack to 6A.  We applied the service pack to all 5.x
> boxes (about 10), however only 1 is having problems.

> Patrick Boutilier <boutilpj AT STAFF.EDNET.NS DOT CA>@VM.MARIST.EDU> on 
> 03/14/2001
> 11:14:51 AM
>
> Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
>
> Sent by:  "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
>
>
> To:   ADSM-L AT VM.MARIST DOT EDU
> cc:
>
> Subject:  Re: Netware client problems
>
>
> Have you tried using a period in front of the name?
>
> eg.
>
> ..backupuser.orgunit.org
>
> Quoting Jim Kirkman <jmk AT EMAIL.UNC DOT EDU>:
> > Howdy,
> >
> > NW Client 4.1.1_18 talking to an ADSM 3.1.2.50 server on OS\390.
> >
> > I keep getting a login prompt when the scheduler kicks off, or if I run
> > a
> > manual. I'm using the fully qualified login name, and the pwd file has
> > been
> > established in two of the three instances. I type in username and
> > password and
> > get the error "Login denied to NewWare Target Service Agent
> > 'blahblah'.
> > However, the backup runs.
> >
> > Any ideas? It's like I'm getting access to the server and context, but
> > not the
> > tree.
> >
> > thank,
> >
> > --
> > Jim Kirkman
> > AIS - Systems
> > UNC-Chapel Hill
> > 966-5884
>
> Staff Sig...