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Microsoft KB Archive/172881

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Knowledge Base

Nwssvc.exe Access Violates When GetFileSecDesc Returns NULL

Article ID: 172881

Article Last Modified on 11/1/2006


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

This article was previously published under Q172881


File and Print Service for NetWare's (FPNW) user-mode process, Nwssvc.exe, displays an access violation error message due to a Null value being returned.

"The application obj\i386\nwssvc.exe generated an application error. The error occurred on <date> at


The function GetFileSecDesc returns success even though it was returned a NULL value when it called RtlGetDaclSecurityDescriptor.


Microsoft has confirmed this to be a problem in Windows NT version 4.0.

A supported fix is now available, but is not fully regression tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Product Support Services for more information.

Additional query words: prodnt

Keywords: kbhotfixserver kbqfe kberrmsg KB172881