Hello,

I have a small workgroup with 19 systems on it - all running Windows 2000
server. On one system I have a a printer, which is shared.

With no changes that anyone can think of, as of Monday, 3 of the systems,
seem to lose workgroup connectivity and can't print. Those systems can still
access the internet, email, etc, just losing local connectivity to the
workgroup but - can still ping within the workgroup either via IP address or
NETBIOS name.

If we try to view the printer, or browse the workgroup, we get an error
stating: "A Specified Authentication Package is Unknown".

All systems, the ones that work and those that are having the problems, are
configured the same way.

After rebooting, the systems seem to work fine for approximately 15 minutes.
We can not find any "trigger" for the loss of network connectivity.

Any suggestions
Thanks!
Planner

Hope this helps - have seen similar posts on this error message. Summary copied from solutions website below - please copy URL below for more details.

http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B887493

This issue may occur if the Authentication Packages registry entry is missing in the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
When you install or remove certain software programs, the programs may remove the Authentication Packages registry entry during the installation or removal process.

Thanks. I will check it out.