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

Update information

How to obtain this update

This compatibility update is offered when you have the release version of Windows 8. 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
  
  This action 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. The 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.

Update replacement information

This update replaces the following update:

2739971 Compatibility update for the legacy upgrade experience

File information

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:

  Version	Product	Milestone	Service branch
  6.2.920 0.16 xxx	Windows 8 or Windows Server 2012	RTM	GDR
  6.2.920 0.20 xxx	Windows 8 or Windows Server 2012	RTM	LDR

• 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 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

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.