This article describes an issue in which a "0x0000004A" or "0x0000009F" Stop error occurs in Windows 8.1. An update is available to resolve this issue. Before you install this update, check out the Prerequisites section.
This issue occurs on a computer that is running Windows 8.1 if one of the following conditions is true:
- The computer is docked, and it uses local area network (LAN). Then, you undock the computer, and switch to Wi-Fi.
- USB devices are connected.
- Power transitions, such as you wake the computer from sleep.
How to get this update
Important If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.
Windows UpdateThis update is provided as an Optional update on Windows Update. For more information on how to run Windows Update, see How to get an update through Windows Update.
Update detail information
PrerequisitesTo install this update, install April 2014, update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) in Windows 8.1 or Windows Server 2012 R2.
Registry informationTo apply this update, you don't have to make any changes to the registry.
Restart requirementYou may have to restart the computer after you apply this update.
Update replacement informationThis update doesn't replace a previously released update.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.