Compatibility update for the legacy upgrade experience is available for Windows 8 and Windows Server 2012

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Article ID: 2791338 - View products that this article applies to.
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Introduction

A compatibility update for the legacy upgrade experience is available. This update improves the legacy upgrade experience when you upgrade to the latest version of Windows 8. This compatibility update is dated March 2013.

For more information about the improvements, refer to the "Changes in upgrade behavior when you install the update" section.

More information

Update information

How to obtain this update

By default, this compatibility update is offered when you have the release version of Windows 8 or Windows Server 2012. No interaction is required to apply this update.

Upgrade actions

This compatibility update may trigger several actions when you upgrade to the latest version of Windows 8. The following are the most common actions that may occur:
  • Upgrade block

    Puts an upgrade block on an application that may cause the upgrade to Windows 8 to fail. Windows 8 may put an upgrade block on a third-party application only if the manufacturer is notified. User has to uninstall to continue with the upgrade.
  • Reinstall after upgrade

    The user can continue to upgrade. However, the application or driver works if a user reinstalls after the upgrade.

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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Application NameVersionBehavior after you install the update
Dr.Web Security Space Pro7.xYou have to uninstall the application to continue with the upgrade. Provides a URL for more information about the product compatibility.
Sandboxie3.73.xYou have to uninstall the application to continue with the upgrade. Provides a URL for more information about the product compatibility.
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.

Update replacement information

This update replaces the following update:
2793214 Compatibility update for the legacy upgrade experience is available for Windows 8 and Windows Server 2012
2774225 Compatibility update for the legacy upgrade experience is available for Windows 8 and Windows Server 2012

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.
Windows 8 and Windows Server 2012 file information 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:
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    VersionProductMilestoneService branch
    6.2.920 0.16 xxxWindows 8 or Windows Server 2012RTMGDR
    6.2.920 0.20 xxxWindows 8 or Windows Server 2012RTMLDR
  • 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.
For all supported x86-based versions of Windows 8
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File nameFile versionFile sizeDateTimePlatform
Drvmain.sdbNot applicable233,44821-Jan-201309:52Not applicable
Sysmain.sdbNot applicable4,622,89021-Jan-201309:52Not applicable
Sysmain32.sdbNot applicable1,430,30821-Jan-201309:52Not applicable
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For all supported x64-based versions of Windows 8 and of Windows Server 2012
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File nameFile versionFile sizeDateTimePlatform
Drvmain.sdbNot applicable233,16622-Jan-201307:45Not applicable
Sysmain.sdbNot applicable387,25222-Jan-201307:45Not applicable
Sysmain32.sdbNot applicable1,430,30822-Jan-201307:45Not 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

Properties

Article ID: 2791338 - Last Review: March 12, 2013 - Revision: 1.0
Applies to
  • Windows 8
  • Windows 8 Enterprise
  • Windows 8 Pro
  • Windows Server 2012 Datacenter
  • Windows Server 2012 Essentials
  • Windows Server 2012 Foundation
  • Windows Server 2012 Standard
Keywords: 
kbfix atdownload kbsurveynew kbexpertiseadvanced KB2791338

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