You cannot prevent the use of the NetMessageBufferSend function in Windows Messenger (823081)

RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

Hotfix information

Part 1. Obtain and then install the hotfix

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

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site: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 usual 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 hotfix 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   Platform
   ----------------------------------------------------------------
   12-Nov-2003  19:55  5.1.2600.1320  326,656  Wkssvc.dll  IA-64

Part 2. Add the registry key and the registry value to the registry

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.

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:

   System\CurrentControlSet\Services\LanmanWorkstation\Parameters

3. On the Edit menu, point to New, and then click DWORD Value.
4. Type LimitMessageSend, and then press ENTER.
5. On the Edit menu, click Modify.
6. Type 0, and then click OK.

Note The LimitMessageSend value of 0 is the default setting. You may also enter 1 for no regular users, or enter 2 if you want only the administrator to be able to send messages.