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Windows 7 (32-bit, 64-bit) Update Module KB2877999 (WW) - ThinkPad

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README for Windows 7 Update Module KB2877999

5.4 KB
Windows 7 (32-bit)
Windows 7 (64-bit)
Windows 7 Update Module KB2877999 for 32-bit Windows
1.4 MB
Windows 7 (32-bit)
Windows 7 Update Module KB2877999 for 64-bit Windows
1.4 MB
Windows 7 (64-bit)

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

QFE# Description of Software
2877999 FIX: Stop Error 0x50 and "0x0000009F" in Windows 7 or Windows Server 2008 R2

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

Supported ThinkPad Systems
Supported Operating Systems
Summary of changes
Installation Instructions
Uninstallation Instructions


Supported ThinkPad Systems
  • ThinkPad 11e
  • ThinkPad T440, T440s, T440p
  • ThinkPad T540p
  • ThinkPad W540
  • ThinkPad X240, X240s
  • ThinkPad Yoga, S1 Yoga
Supported Operating Systems
  • Microsoft Windows 7 32-bit, 64-bit Standard, SP1
Summary of Changes


  • < > Version numbers
  • [Important] Important update
  • (New) New function or enhancement
  • (Fix) Correction to existing function

Version 1.00

  • (New) Added support for ThinkPad 11e.
  • (New) Added support for ThinkPad S1 Yoga,Yoga.
  • (New) Initial release.
  • This software can work correctly on Lenovo computers listed above.
Installation Instructions

Notes: If your computer runs satisfactorily now, it may not be necessary to update the software.
To determine if you should update the software, refer to the Version Information section.

Manual Install

This section assumes to use Internet Explorer and Windows Explorer.

[Downloading file]

  1. Select the underlined file name. Once this is done, some pop-up windows will appear.
  2. Follow the instructions on the screen.
  3. In the window to choose Run or Save, click the Save button.
  4. Choose the folder you would like to download the file to and click the Save button. A different window will appear and the download will begin and complete. Once the download has completed, there may or may not be a message stating that the download completed successfully.

[Extracting files]

  1. Make sure to be logged on with administrative account.
  2. Locate the directory where the file was downloaded.
  3. Locate the file that was downloaded and double-click it.
  4. Follow the instructions on the screen.
  5. In the "Select Destination Location" window, click Next. If you would like to select a different folder, click Browse.
  6. In the "Ready to Install" window, click Install. All the necessary files will be extracted to the folder selected in the step 9.

[Installing files]

  1. Make sure the checkbox next to "Install ..... now" is checked and click Finish.
  2. Follow the instructions on the screen to complete installation and restart the computer.

Finally delete the file saved in Step 4.

Uninstallation Instructions
Manual Uninstall
  1. Start Windows and logon with an administrator account.
  2. Select Start, then select Control Panel.
  3. Make sure View by Category is selected, and click Uninstall a program.
  4. Select update module (KB2877999) listed under the Microsoft Windows group,
    and select Uninstall or Uninstall/Change.
  5. Follow the instructions on the screen to complete uninstallation and restart the computer.

  • Alias ID:
  • Document ID:DS038884
  • Last Updated :23/06/2014
  • (c) 2014 Lenovo