How to obtain this updateThis compatibility update is offered when you upgrade to the release version of Windows 8.1 or Windows Server 2012 R2.
Upgrade actionsThis 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 updateApplications 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.
|Applications or devices||Version||Behavior after you install the update|
|Network-based HP inkjet printers||Not available||The user is informed that the printer software has to be reinstalled after upgrading to Windows 8.1.|
Update replacement informationThis update replaces the following update:
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
Article ID: 2914220 - Last Review: Jan 14, 2014 - Revision: 1