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Windows 7 (32-bit, 64-bit) Update Module KB2661796 - ThinkPad

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Windows Update Module KB2661796 for Windows 7 (32-bit)
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Windows 7 (32-bit)
Windows Update Module KB2661796 for Windows 7 (64-bit)
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Windows 7 (64-bit)
README for Windows 7 Update Module KB2661796
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Windows 7 (32-bit)
Windows 7 (64-bit)

Note for ThinkPad X1 Carbon users:
This document supports X1 Carbon with the following Machine Type:

  • 3443, 3444, 3446, 3448, 3460, 3462, 3463
  • 20A7, 20A8
  • 20BS, 20BT
To find your X1 Carbon Type, please click here for more details.

This package installs the following update module (KB) provided by Microsoft.

QFE# Description of Software
2661796 "0x000000C4" Stop error when you enable Driver Verifier in Windows 7 or in Windows Server 2008 R2

Go to the following Microsoft site to get the detailed information.


Supported ThinkPad Systems
  • 11e (Type 20D9, 20DA)
  • Edge 11, Edge 13, Edge 14, Edge 15, Edge E10, Edge E30, Edge E31, Edge E40, Edge E50
  • Edge E120, Edge E125, Edge E220s, Edge E320, Edge E325
  • Edge E420, Edge E420s, Edge S430, Edge E520
  • Helix (Type 3xxx)
  • L410, L412, L420, L421, L430
  • L510, L512, L520, L530
  • R60, R60e, R60i, R61, R61e, R61i, R400, R500
  • SL300, SL400, SL400c, SL410, SL500, SL500c, SL510
  • T60, T60p, T61, T61p
  • T400, T400s, T410, T410i, T410s, T410si, T420, T420i, T420s, T420si, T430, T430i, T430s, T430si, T431s, T440, T440s, T440p, T540p
  • T500, T510, T510i, T520, T520i, T530, T530i, T550
  • W500, W510, W520, W530, W540, W541, W541,W550s, W700, W700ds, W701, W701ds
  • X60, X60s, X60 Tablet, X61, X61s, X61 Tablet
  • X1, X1 Hybrid(*1), X1 Carbon
  • X100e, X120e, X121e, X130e, X131e, X140e, X200, X200s, X200 Tablet, X201, X201i, X201s, X201 Tablet
  • X220, X220i, X220 Tablet, X220i Tablet, X230, X230i, X230s, X230 Tablet, X230i Tablet
  • X240, X240s, X250
  • X300, X301
  • Yoga, Yoga 15

*1: Supports Windows 7 64-bit only

Supported Operating Systems
  • Microsoft Windows 7 32-bit, 64-bit SP1


Summary of Changes


  • < > Package version number
  • [Important] Important update
  • (New) New function or enhancement
  • (Fix) Correction to existing function

Version 1.00

  • (New) Added support for ThinkPad T550,W541,W550s,X250.
  • (New) Added support for ThinkPad X1 Carbon (Machine types: 20BS, 20BT), S5 Yoga 15.
  • (New) Added support for ThinkPad 11e (Type 20D9, 20DA) .
  • (New) Added support for ThinkPad X1 Carbon (Machine types: 20A7, 20A8).
  • (New) Added support for ThinkPad S1 Yoga,Yoga.
  • (New) Added a sentence in the NOTES section
  • (New) Added support for ThinkPad T540p,W540, W541,X140e.
  • (New) Added support for ThinkPad T440,T440s,T440p,X240,X240s.
  • (New) Added support for ThinkPad T431s, X230s.
  • (New) Added support for ThinkPad Helix (Type 3xxx), X1 Helix (Type 3xxx), X1 Helix (Type 3xxx) 3G.
  • (New) Added support for ThinkPad X1 Carbon.
  • (New) Added support for ThinkPad X131e, Edge S430.
  • (Fix) Modified packaging for Microsoft Windows 7  32-bit version.
  • (New) Initial release.


Additional Information

Please refer to the README file for the following:

  • Installation Instructions
  • Determining Which Version is Installed
  • Complete list of summary of changes
  • Known limitations (if any)


  • Alias ID:
  • Document ID:DS028927
  • Last Updated :17 Mar 2015
  • (c) 2014 Lenovo