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Q167035: Print Queue May Stop Responding When Running LPR on Server

Article: Q167035
Product(s): Microsoft Windows NT
Version(s): 3.51 SP5,4.0
Operating System(s): 
Keyword(s): kbprint
Last Modified: 07-SEP-2001

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The information in this article applies to:

- Microsoft Windows NT Workstation versions 3.51 SP5, 4.0 
- Microsoft Windows NT Server versions 3.51 SP5, 4.0 
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SYMPTOMS
========

When you use LPR to print a job to the LPD service on the same computer, the
fourth print job may fail.

CAUSE
=====

Microsoft changed its code to allow for more than the eleven ports that the
current RFC 1179 allocates for LPR and LPD.

Prior to Windows NT 3.51 Service Pack 5 and Windows NT 4.0, the LPD service used
Port 515 and LPR used source ports (Port 721 through Port 731 inclusive), which
follows the specifications in RFC 1179. This prevents LPR from using the same
port as LPD.

In Windows NT 3.51 Service Pack 5 and Windows NT 4.0, LPR can now use Port 512
through Port 1023, so it is possible that LPR and LPD could both use Port 515 at
the same time. When this port conflict occurs, LPR fails to print the job.

RESOLUTION
==========

LPR has been changed so that port 515 is not used as an LPR port.

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT version 3.51. A
supported fix is now available, but has not been fully regression-tested and
should be applied only to systems experiencing this specific problem. Unless you
are severely impacted by this specific problem, Microsoft recommends that you
wait for the next Service Pack that contains this fix. Contact Microsoft
Technical Support for more information.


Microsoft has confirmed this to be a problem in Windows NT version 4.0. This
problem was corrected in the latest Microsoft Windows NT 4.0 U.S. Service Pack.
For information on obtaining the service pack, query on the following word in
the Microsoft Knowledge Base (without the spaces):

  S E R V P A C K


For additional information, click the article number below to view the article in
the Microsoft Knowledge Base:

  Q179156 Updated TCP/IP Printing Options for Windows NT 4.0 SP3 and Later

Additional query words: rfc1179

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Keywords          : kbprint 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT351search kbWinNT400search kbWinNTW351search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTS351search kbWinNTS351sp5 kbWinNTW351sp5
Version           : :3.51 SP5,4.0
Hardware          : ALPHA x86
Issue type        : kbbug

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