When you update Windows 8 or Windows RT to Windows 8.1 or Windows RT 8.1, Windows may not provide device and application compatibility information as expected.
How to obtain this update
This update is applied when you upgrade to Windows 8.1 Preview or Windows RT 8.1 Preview. No interaction is required to apply this update.
To apply this update, you must be running Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2.
To apply this update, you do not have to make any changes to the registry.
You do not have to restart the computer after you apply this update.
Update replacement information
This update does not 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 RT 8.1, Windows 8.1, and Windows Server 2012 R2 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:
6.3.920 0.16 xxx
Windows RT, Windows 8, and Windows Server 2012
For Windows RT
For all supported x86-based versions of Windows 8
For all supported x64-based versions of Windows 8 and of Windows Server 2012
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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
Windows 8.1, Windows 8.1 Pro, Windows 8.1 Enterprise, Windows RT 8.1, Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Foundation, Windows Server 2012 R2 Standard