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Article ID: 196713 - Last Review: November 2, 2013 - Revision: 3.0

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A stop 0x0000000A or stop 0x000000050 is received in Nwlnkipx.sys when source routing information exceeds 18 bytes in length. Source routing information exceeding 18 bytes in length causes stack corruption and, therefore, the trap.


To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:
  • Windows Service Pack Center ( -or-

  • 152734  ( ) how to obtain the latest windows nt 4.0 service pack
For information on obtaining the individual software update, contact Microsoft Product Support Services. 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: (


Microsoft has confirmed this to be a problem in Windows NT version 4.0. This problem was first corrected in Windows NT version 4.0 Service Pack 5.

More information

According to the 802.5 Specification, source routing information can be up to 31 bytes in length. Originally this maximum length was 18 bytes to allow for a maximum 7 hops. This was later extended to 31 bytes.

Applies to
  • Microsoft Windows NT Server 4.0 Standard Edition
  • Microsoft Windows NT Workstation 4.0 Developer Edition
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