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.

Symptoms

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 Update

This 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

Prerequisites

To 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 information

To apply this update, you don't have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this update.

Update replacement information

This update doesn't replace a previously released update.

The global version of this update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 8.1 and Windows Server 2012 R2 file information and notes


  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.3.960 0.18 xxx

    Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2

    RTM

    GDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. The security catalog files, for which the attributes aren't listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Tunnel.sys

6.3.9600.18048

123,392

04-Sep-2015

18:04

x86

For all supported x64-based versions of Windows 8.1 or Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Tunnel.sys

6.3.9600.18048

154,112

04-Sep-2015

19:24

x64

For all supported Windows RT 8.1

File name

File version

File size

Date

Time

Platform

Tunnel.sys

6.3.9600.18048

125,952

04-Sep-2015

17:28

Not applicable


Additional file information


Additional file information for Windows 8.1 and for Windows Server 2012 R2


Additional files for all supported x86-based versions of Windows 8.1

File property

Value

File name

X86_deadaca10b31b1bd12e389e0e748234b_31bf3856ad364e35_6.3.9600.18048_none_081dc08b3e9f8b83.manifest

File version

Not applicable

File size

694

Date (UTC)

05-Sep-2015

Time (UTC)

07:31

Platform

Not applicable

File name

X86_microsoft-windows-tunnel_31bf3856ad364e35_6.3.9600.18048_none_3838db2ba02a211d.manifest

File version

Not applicable

File size

33,124

Date (UTC)

04-Sep-2015

Time (UTC)

19:28

Platform

Not applicable


Additional files for all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File property

Value

File name

Amd64_e702b87938faf4dfbb0f3a459ea512a3_31bf3856ad364e35_6.3.9600.18048_none_f5218eb6206ce224.manifest

File version

Not applicable

File size

698

Date (UTC)

05-Sep-2015

Time (UTC)

07:31

Platform

Not applicable

File name

Amd64_microsoft-windows-tunnel_31bf3856ad364e35_6.3.9600.18048_none_945776af58879253.manifest

File version

Not applicable

File size

33,128

Date (UTC)

04-Sep-2015

Time (UTC)

20:53

Platform

Not applicable


Additional files for all supported Windows RT 8.1

File property

Value

File name

Arm_53feee6f1daea5149d04945b5caa059c_31bf3856ad364e35_6.3.9600.18048_none_101fdc462fb37cb1.manifest

File version

Not applicable

File size

694

Date (UTC)

05-Sep-2015

Time (UTC)

07:31

Platform

Not applicable

File name

Arm_microsoft-windows-tunnel_31bf3856ad364e35_6.3.9600.18048_none_383b4d83a0273fe3.manifest

File version

Not applicable

File size

33,124

Date (UTC)

04-Sep-2015

Time (UTC)

18:15

Platform

Not applicable




Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

See the terminology that Microsoft uses to describe software updates.

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