December 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2

Method 1: Windows Update

This update is provided as an Optional update from Windows Update.


For more information about Windows Update, see frequently asked questions on Windows Update.

Method 2: Microsoft Download Center

You can also obtain the stand-alone update package through the Microsoft Download Center.

Download the x86-based Windows 8.1 update package now.
Download the x64-based Windows 8.1 update package now.
Download the x64-based Windows Server 2012 R2 update package now.

Note The update for Windows RT 8.1 can be obtained only from Windows Update.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Prerequisites

To apply this update, you must first install update 2919355 on Windows 8.1 or Windows Server 2012 R2.

Restart information

You must restart the computer after you apply this update.

Update replacement information

This update does not replace any previously released update.

File information

File detail information

For a list of the files that are provided in this update 3013769, download the file information for update 3013769.

File hash information

The following table lists the thumbprints of the certificates that are used to sign the updates (.msu). Verify the certificate thumbprint in this Microsoft Knowledge Base article against the certificate thumbprint indicated on the update that you download.