Important When you install this update (KB3013767) from Windows Update, KB2999323 is included in the installation.

The December 2014 update rollup package for Windows RT, Windows 8, and Windows Server 2012 resolves issues and includes performance and reliability improvements. We recommend that you apply this update rollup as part of your regular maintenance routines. Check out the fixed issues in this update.

Issues that this update fixes

This update package fixes the issues that are documented in the following Microsoft Knowledge Base articles:

How to obtain this update

To obtain this update, use one of the following methods.

Method 1: Windows Update

This update is provided as an Important update from Windows Update. To obtain this update from Windows Update, follow these steps:

  1. Swipe in from the right edge of the screen, and then tap Search. Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.

  2. Tap or click Settings.

  3. In the search box, type Windows Update.

  4. Tap or click Install optional updates.

Method 2: Microsoft Download Center

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

Download Download the x86-based Windows 8 update package now.
Download Download the x64-based Windows 8 update package now.
Download Download the x64-based Windows Server 2012 update package now.

Note The update for Windows RT 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.

Update information


There are no prerequisites to apply this update.

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 3013767, download the file information for update 3013767.

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 that is indicated on the update that you download.

File name

SHA1 and SHA2


SHA1: 9D2633B1AB147B14FC5B6B2ED0F9A83C754CDF69
SHA256: 7082B82B7F9B83EFF9DE889E5AE4CA811E7BFC74D564B5B44FFCA99A7E8BD109


SHA1: 7BCD1D5D9FC25B0AF31EA8C80B37C3EB89F5AD98
SHA256: 5D5E1AAA1EA1BB60D82D6C526FC4E2602FD241D305B5A3FD2798F0D378F35567


SHA1: 04560BBC50C0207E3FB170B685A030B174E66EC6


SHA1: 111FF23AADAC94D069CDCFF204674FBA9F3EA515
SHA256: CDA827E77D00A37B963911B0D28E6C10597FE9E3ADF68DCD3ED2E0AC1644F047


SHA1: B5F4A2A0A0BB3970C04DE810ED6BD68733E361DD
SHA256: DC4255F64F79739A53B743A167915414FF3BDF52AEA15D86EB532D3CE03704DF


SHA1: 74DD593259AE834326F2D276F0FA547E8FCD3E66
SHA256: 29D1BB623E65513534499EA386A9EF821D06DFAF2F342230C4626EDB2A0D973D


For more information about Windows Update, go to the following Microsoft websites:

Troubleshoot problems with installing updates

Frequently asked questions about Windows automatic updatesSee the terminology that Microsoft uses to describe software updates.

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