Client32 Login Access Denied;was working

Running Novell Netware 4.2 on the server and have a Win98SE machine
that gives a “4.20.10-100 Access Denied” every time a user tries to login
using Client32. It will not accept any of the accounts on the network. I
can take one account, logon at another machine just fine, logoff and try the
Win98SE machine and get Access Denied.

This machine has been up and running for about 6 weeks, then it started
giving me the Access Denied error.

I have reloaded the Client32 as well as the IPX protocols several times,
even set the logic board on the IPX.

Suggestions?