Compatibility update for the web, store, and media upgrade experience is available for Windows 8.1 and Windows Server 2012 R2: January 2014

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Article ID: 2914220 - View products that this article applies to.
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Introduction

A compatibility update for the web and media upgrade experience is available. This update improves the web, store, and media upgrade experience when you upgrade to the latest version of Windows 8.1 or Windows Server 2012 R2. Additionally, this update offers the latest compatibility status of the applications, devices, and drivers that are already installed on your computer.

More information

Update information

How to obtain this update

This compatibility update is offered when you upgrade to the release version of Windows 8.1 or Windows Server 2012 R2.

Upgrade actions

This compatibility update may trigger several actions when you upgrade to the latest version of Windows 8.1 or Windows Server 2012 R2. The following are the most common actions that may be triggered:
  • Upgrade block

    Puts an upgrade block on an application that may cause the upgrade to Windows 8.1 or to Windows Server 2012 R2 to fail. Windows 8.1 and Windows Server 2012 R2 put an upgrade block on a third-party application only if the manufacturer is notified. The user must uninstall the application to continue with the upgrade.
  • Hard block

    When a hard block is put on an incompatible application, you cannot run the application after you upgrade. Windows 8.1 and Windows Server 2012 R2 put a hard block on a third-party application only if the manufacturer is notified. Improves the user experience by warning the end-user and providing a "more information" URL about the product.
  • Soft block

    A soft block notifies you when a primary function of an application may not work or may cause application instability. Improves the user experience by warning the end-user and providing a "more information" URL about the product.
  • Driver block

    May block an existing driver on your computer when you upgrade to Windows 8.1 or to Windows Server 2012 R2. If this occurs, a driver for Windows 8.1 or Windows Server 2012 R2 is installed. 
  • Block upgrade, can reinstall

    May block the upgrade to Windows 8.1 or Windows Server 2012 R2. To continue the upgrade, you must uninstall the application or driver. After Windows 8.1 or Windows Server 2012 R2 is installed, the application or driver can be reinstalled, and may then function correctly.
  • Reinstall after upgrade

    Allows the upgrade to the release version of Windows 8.1 or Windows Server 2012 R2 to complete successfully. However, you can reinstall the application or device after the upgrade.
  • Migration block

    This action blocks an incompatible application from being migrated either completely or partially during the upgrade from Windows 8 to Windows 8.1 so that the upgrade completes successfully.

Changes in upgrade behavior when you install the update

Applications or devices may experience a change in behavior after this compatibility update is installed.

The following table lists the applications and devices that may be dynamically migrated when you update. This table also describes the behavior of these applications and devices after this compatibility update is installed.

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Applications or devicesVersionBehavior after you install the update
Network-based HP inkjet printersNot availableThe user is informed that the printer software has to be reinstalled after upgrading to Windows 8.1.

Update replacement information

This update replaces the following update:
2907791 Compatibility update for the web, store, and media upgrade experience is available for Windows 8.1 and Windows Server 2012 R2: December 2013

File information

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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.

For all supported x86-based versions of Windows 8.1

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File nameFile versionFile sizeDateTimePlatform
Drvmain32.sdbNot applicable431,18210-Dec-201311:24Not applicable
Sysmain32.sdbNot applicable825,83410-Dec-201311:24Not applicable
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For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

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File nameFile versionFile sizeDateTimePlatform
Drvmain32.sdbNot applicable431,18210-Dec-201311:21Not applicable
Drvmain64.sdbNot applicable433,13210-Dec-201311:22Not applicable
Sysmain32.sdbNot applicable825,83410-Dec-201311:21Not applicable
Sysmain64.sdbNot applicable692,46010-Dec-201311:22Not applicable
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For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
Third-party information disclaimer

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The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
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Properties

Article ID: 2914220 - Last Review: January 14, 2014 - Revision: 1.0
Applies to
  • Windows 8.1
  • Windows 8.1 Enterprise
  • Windows 8.1 Pro
  • Windows Server 2012 R2 Datacenter
  • Windows Server 2012 R2 Essentials
  • Windows Server 2012 R2 Foundation
  • Windows Server 2012 R2 Standard
Keywords: 
kbfix atdownload kbsurveynew kbexpertiseadvanced KB2914220

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