"Error Loading the TCP MIB Library" error when you add a standard TCP/IP printer port in Windows XP and in Windows 2000

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Article ID: 261302 - View products that this article applies to.
This article was previously published under Q261302
This article applies to Windows 2000. Support for Windows 2000 ends on July 13, 2010. The Windows 2000 End-of-Support Solution Center is a starting point for planning your migration strategy from Windows 2000. For more information see the Microsoft Support Lifecycle Policy.
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When you use the Add Standard TCP/IP Printer Port Wizard in Microsoft Windows XP or Microsoft Windows 2000, you may receive the following error message:
Error loading the TCP MIB library.
When you click OK, you receive the following additional error message:
Specified port cannot be added. Operations could not be completed.
When you click OK, the Add Standard TCP/IP Printer Port Wizard quits, and no port is added.


This behavior may occur if a third-party version of the Wsnmp32.dll, Ntprint.dll, Tcpmib.dll, Mgmtapi.dll, or Snmpapi.dll file has been copied to the %SystemRoot% folder.


To resolve this behavior, rename or delete these files in the %SystemRoot% folder. These files are taking precedence over the Microsoft-supplied file in the %SystemRoot%\System32 folder.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


The Add Standard TCP/IP Printer Port Wizard checks the root system folder for some dynamic-link libraries (DLLs) before it checks the System32 folder.


Article ID: 261302 - Last Review: October 30, 2006 - Revision: 5.3
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Home Edition
  • Microsoft Windows 2000 Professional Edition
  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
kb3rdparty kberrmsg kbprb KB261302

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