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RSVP Service Provider Causes some Winsock Applications to Stop Responding

The information in this article applies to:
  • Microsoft Windows 2000 SP2 Professional
  • Microsoft Windows 2000 SP2 Server
  • Microsoft Windows 2000 SP2 Advanced Server


After you install Windows 2000 Service Pack 2 (SP2), a WinSock application may stop responding (hang) during startup. In a debugger, you may receive the following error message:

Provider 'RSVP UDP Service Provider' returned bad proc table!
R->WSPStartup() failed: 10091


The problem occurs when a layered service provider (LSP) is installed over Resource ReSerVation Protocol (RSVP) on a Windows 2000-based computer. When an LSP is installed over the RSVP TCP or UDP provider, it loads the RSVP service provider by calling its WSPStartup function. The RSVP provider is expected to fill in the ENTIRE WSPPROC_TABLE structure that is passed into WSPStartup, but some of these are not filled out.


If you have not installed Windows 2000 SP2, install the following hotfix before you apply the service pack. Windows 2000 SP2 does not overwrite this hotfix.

If you have already applied Windows 2000 SP2 and your computer hangs during startup, restart your computer to Safe Mode with Command Prompt, and then apply the following hotfix. To start in Safe mode, restart your computer, press F8, and then choose Safe Mode with Command Prompt.

A supported fix is now available from Microsoft, but it is only intended to correct the problem described in this article and should be applied only to systems experiencing this specific problem. This fix may receive additional testing at a later time, to further ensure product quality. 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 fix.

To resolve this problem immediately, download the fix as instructed below or contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:
NOTE: In special cases, charges that are normally incurred for support calls may be canceled, if a Microsoft Support Professional determines that a specific update will resolve your problem. Normal support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The following file is available for download from the Microsoft Download Center:
[GRAPHIC: Download] Download Q300980_W2K_SP3_x86_en.exe now
Release Date: September 28, 2001

For additional information about how to download Microsoft Support files, click the article number below to view the article in the Microsoft Knowledge Base:
Q119591 How to Obtain Microsoft Support Files from Online Services
Microsoft used the most current virus detection software available on the date of posting to scan this file for viruses. Once posted, the file is housed on secure servers that prevent any unauthorized changes to the file.

The English version of this fix should have the following file attributes or later:
   Date         Time   Version        Size    File name
   30-Jul-2001  20:04  5.0.2195.3987  77,072  Rsvpsp.dll 


Microsoft has confirmed this to be a problem in the Microsoft products that are listed at the beginning of this article.


For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:

Q249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

Additional query words:

Keywords : kbenv kberrmsg kbnetwork kbtool kbWin2000PreSP3Fix
Issue type : kbbug
Technology : kbwin2000AdvServSearch kbwin2000ServSearch kbwin2000Search kbwin2000ProSearch kbWinAdvServSearch kbWin2000AdvServSP2 kbWin2000ProSP2 kbwin2000ServSP2

Last Reviewed: October 11, 2001
© 2001 Microsoft Corporation. All rights reserved. Terms of Use.  Disability/accessibility  Privacy Policy

Article ID: Q300980

Last Reviewed:
October 11, 2001

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