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Article ID: 323582 - Last Review: October 27, 2006 - Revision: 4.4

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This article was previously published under Q323582
IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986  (http://support.microsoft.com/kb/256986/EN-US/ ) Description of the Microsoft Windows Registry

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SYMPTOMS

A client that accesses a file share on an OS/2 server may consume all the NetBIOS sessions on the server. The server may generate a Net 3101 report that indicates that the server ran out of resources.

CAUSE

When a new session is initiated, the redirector sends a SessionSetup SMB with the VC number set to 0. This indicates that this is a new session, and clears all previous sessions.

Because the OS/2 SMB servers does not end the previous session, NetBIOS sessions on the server side are used up. This leads to the Net 3101 Error on the OS/2 server.

RESOLUTION

Windows XP

To resolve this problem, obtain the latest service pack for Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
322389  (http://support.microsoft.com/kb/322389/EN-US/ ) How to Obtain the Latest Windows XP Service Pack
The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
   Date         Time   Version      Size     File name
   ----------------------------------------------------
   10-Jul-2002  16:36  5.1.2600.49  391,808  Mrxsmb.sys
   10-Jul-2002  16:36  5.1.2600.49  152,832  Rdbss.sys
				

Windows 2000

Service Pack Information

To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
260910  (http://support.microsoft.com/kb/260910/EN-US/ ) How to Obtain the Latest Windows 2000 Service Pack

Hotfix Information

A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows 2000 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support (http://support.microsoft.com/contactus/?ws=support)
NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
   Date         Time   Version           Size     File name
   ----------------------------------------------------
   19-Jul-2002  13:04  5.00.2195.5955    371,248  MRXSMB.SYS
   19-Jul-2002  13:04  5.00.2195.5955    132,048  RDBSS.SYS
				

Set Registry Value to Explicitly End Previous Session

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
A new registry key was added to send a Logoff & X SMB to explicitly end the previous session.

NOTE: Sending Logoff & X SMB affects connections to SAMBA server because it does not handle this SMB well.

Follow these steps, and then quit Registry Editor:
  1. Click Start, click Run, type regedit, and then click OK.
  2. Locate and then click the following key in the registry:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanworkstation\parameters
  3. On the Edit menu, point to New, and then click DWORD.
  4. Type EnableDownLevelLogOff, and then press ENTER.
  5. On the Edit menu, click Modify.
  6. Type 1, and then click OK.

STATUS

Windows XP

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was corrected in Windows XP Service Pack 1.

Windows 2000

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.

MORE INFORMATION

Note The default value for the EnableDownLevelLogOff registry key is 0 (zero). This remains true after applying Windows 2000 Service Pack 4. For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:
265173  (http://support.microsoft.com/kb/265173/EN-US/ ) The Datacenter Program and Windows 2000 Datacenter Server Product

APPLIES TO
  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Professional
  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Professional Edition
Keywords: 
kbhotfixserver kbqfe kbwin2ksp4fix kbbug kbenv kbfix kboswin2000fix kbwin2000presp4fix kbwinxpsp1fix KB323582
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