BSOD System Crash with T-Mobile web'n'walk UMTS Stick

  • Document ID:7006782
  • Creation Date:03-Sep-2010
  • Modified Date:27-Apr-2012
    • Micro Focus Products:
      Client for Open Enterprise Server (Novell Client)

Environment

Novell Client for Windows 2000/XP/2003 4.91 Support Pack 5
T-Mobile UMTS Sticks
T-Online web'n'walk Stick IV
HUAWEI Mobile Connect - 3G PC UI Interface (COM4) also known as E176 (Driver Version 2.9.3.0)
Hardware Version: CD25TCPV
T-Mobile Internet Manager 11.301.05.17.55
Huawei Technologies ewfiltertdidriver.sys "Fri Feb 27 00:39:16 2009 (49A798A4)"

Situation

Systems running certain T-Mobile UMTS stick configurations experienced a system crash 5-10 seconds after connecting using the T-Mobile Internet Manager application. The error seen when the machine crashed was "IRQL_not_less_or_equal Stop 0x0A."

Resolution

The problem stems from the T-Mobile software having installed a Windows TDI filter from Huawei Technologies (ewfiltertdidriver.sys) which is situated between Novell's NWDHCP.SYS and the Microsoft TCPIP.SYS stack. The combination of the Novell Client and the Huawei Technologies filter driver is causing the Microsoft TCP/IP stack to crash.

To resolve this problem, eliminate the TDI filter. You can do this in one of two ways:

1. Delete the file "c:\Winnt\system32\drivers\ewfiltertdidriver.sys"
or
2. From the T-Mobile Software launch the app "c:\Programme\T-Mobile\T-Mobile Internet Manager\RWS\TdiFltUninstall.exe"

This also deletes the TDI-Filter file in the Windows directory. A reboot is needed, when ewfiltertdidriver.sys was loaded at boot.

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