RPC Service Unavailable Error After Upgrading from NT 3.51 to NT 4.0 with FPNW

ID: Q246523

The information in this article applies to:

Microsoft Windows NT Server version 4.0

IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information about how to do this, view the "Restoring the Registry" Help topic in Regedit.exe or the "Restoring a Registry Key" Help topic in Regedt32.exe.

SYMPTOMS

When you try to add or delete a printer after you upgrade from Microsoft Windows NT Server 3.51 to Microsoft Windows NT Server 4.0, with File and Print Services for Netware (FPNW) installed, you may receive the following error message:

RPC Service unavailable

Event Viewer may display the following events:

Event ID: 2510
Source: SRV
Type: Error
Description: The server service was unable to map error code 1722.

Event ID: 2510
Source: SRV
Type: Error
Description: The server service was unable to map error code 1726.

CAUSE

This behavior can occur because of a conflict between FPNW and the 'NWMON' value in the registry.

RESOLUTION

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the "Changing Keys and Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it. If you are running Windows NT, you should also update your Emergency Repair Disk (ERD).

To resolve this issue, perform one of the following procedures:

Install Service Pack 3 (SP3) for Windows NT 4.0. Remote Procedure Call (RPC) is more stable with SP3 and may work better with a printer that is constantly busy through LPR (Line Print Remote).

-or-

Check to see if the 'NWMON' value exists in the registry, and if it does, delete it. Follow these steps:

Start Registry Editor (Regedt32.exe), and then use it to locate the following registry key:


HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Print\

Save the Print key as a backup.

Delete the NWMON value.

Quit Registry Editor.

Stop the Spooler service, and then restart it.

Additional query words: win nt server

Keywords : nt Win
Version : winnt:4.0
Platform : winnt
Issue type : kbprb