Applies ToWindows Server 2012 R2 Datacenter Windows Server 2012 R2 Standard Windows Server 2012 R2 Foundation Windows Server 2012 R2 Essentials Windows 8.1 Enterprise Windows 8.1 Pro Windows 8.1 Windows RT 8.1

Introduction

This update is a cumulative update that includes the security updates and the non-security updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 that were released before March 2014. In addition to previous updates, it includes features such as improved Internet Explorer 11 compatibility for enterprise applications, usability improvements, extended mobile device management, and improved hardware support. Important All future security and nonsecurity updates for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 require this update to be installed. We recommend that you install this update on your Windows RT 8.1-based, Windows 8.1-based, or Windows Server 2012 R2-based computer in order to receive continued future updates.

Improvements in this update

This update includes the following new features and improvements:

  • Enables a more familiar mouse and keyboard functionality for modern apps and controls.

  • Improves the web application compatibility of the Internet Explorer 8 emulation mode in Internet Explorer 11 F12 Developer Tools.

  • Improves performance and reliability when you use multi-display configurations for portrait-first device experiences.

Issues that this update fixes

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

  1. Open Windows Update by swiping in from the right edge of the screen (or, if you are using a mouse, point to the lower-right corner of the screen and move the mouse pointer up), tap or click Settings, tap or click Change PC settings, and then tap or click Update and recovery.

  2. Tap or click Check now, and then wait while Windows looks for the latest updates for your computer.

  3. If updates are found, tap or click Install updates.

  4. Select update 2919335 under Optional, and then tap or click Install.

Note You might have to restart your computer to finish installing some updates. Save and close your files and apps before you restart so that you do not lose anything.  

File detail information For a list of the files that are provided in this update 2919355, download the file information for update 2919355.

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.

File name

SHA1 and SHA2

Windows8.1-kb2919355-arm.msu

SHA1: A6119D3E5DDD1A233A09DD79D91067DE7B826F85 SHA256: CF3E9DD5A521965A613CA5B931DEA739AC9101E21DC20AA6D05374710083E426

Windows8.1-kb2919355-x64.msu

SHA1: E6F4DA4D33564419065A7370865FAACF9B40FF72 SHA256: B0C9ADA530F5EE90BB962AFA9ED26218C582362315E13B1BA97E59767CB7825D

Windows8.1-kb2919355-x86.msu

SHA1: DE9DF31E42FE034C9A763328326E5852C2B4963D SHA256: F8BECA5B463A36E1FEF45AD0DCA6A0DE7606930380514AC1852DF5CA6E3F6C1D

Windows8.1-kb2932046-arm.msu

SHA1: FE6ACF558880D127AEF1A759A8C2539AFC67B5FB SHA256: 86D78135033944F169974E3523F12072BC34DE82D68DE924250D0917FB953254

Windows8.1-kb2932046-x64.msu

SHA1: 6AEE5FDA6E2A6729D1FBAE6EAC08693ACD70D985 SHA256: 46B5F5AC8592CAA1FC9F9494F775C480DD35B8D1034BC443469DF2AE7260CD2E

Windows8.1-kb2932046-x86.msu

SHA1: BFD8CA4C683CCEC26355AFC1F2E677F3809CB3D6 SHA256: A57C15C14F21D2A36A10A587EFBD5229E5B10C58D5C39E809093582151CB061A

Windows8.1-kb2937592-arm.msu

SHA1: 860C83A0CCCC0519111F57A679AE9F9D071315E5 SHA256: 0ABB841953F1ABBD59D0D95F20A093D8FF454F2C8CDD781C87693F3B32FE9B66

Windows8.1-kb2937592-x64.msu

SHA1: 4ABC0A39C9E500C0FBE9C41282169C92315CAFC2 SHA256: 094F92C5FEA35C9067844F7ACC160F3106214FC62A56068798759512183C18FD

Windows8.1-kb2937592-x86.msu

SHA1: 96A3416D480BD2B54803DF26B8E76CD1D0008D43 SHA256: AF4622499F3A054C8EEF2CED379B24F95AF95ECA1B8582C22935ED6CEDDD1553

Windows8.1-kb2938439-arm.msu

SHA1: 4A536D9DDCD9993CBE4FBC309EBD50A18D65F954 SHA256: 5E7D03352B572006BC5C5CBB793DEE8A9C0E0CF8B4D06B6441F3FC45D6DB6F72

Windows8.1-kb2938439-x64.msu

SHA1: 3ED1574369E36B11F37AF41AA3A875A115A3EAC1 SHA256: 320C76D201A466B5AF4C22EF24135EE723A72007C6E59B77374281F5880C9D15

Windows8.1-kb2938439-x86.msu

SHA1: AC9ACA7E41C8E818EDBEA0A8026189EE086F7AA2 SHA256: 4BAAF34757D969C8838648C590AF7511F8CDF3B6CB60F820CE9EDD858E7012D8

Windows8.1-KB2934018-arm.msu

SHA1: 28C62F5A4129BA24AB75936517C5066435702AE8 SHA256: D87E2D6D5A9D544FF50D268DF6421F92791416F095A8A09050B5A8A48D334D5D

Windows8.1-KB2934018-x64.msu

SHA1: 234A5FC4955F81541F5BFC0D447E4FC4934EFC38 SHA256: 083CB134F59107531E241645530FED396F3CFDD8128AB33349FE138F20F2E19D

Windows8.1-KB2934018-x86.msu

SHA1: 8FB05387836B77ABBF1755185AE743C9DA417E9A SHA256: 3976C63843B89BC3A167F26166C7FF7007EDC2EDF3ED671888B5480EE8C34179

Windows8.1-KB2959977-arm.msu

SHA1: D37DFE20CDC496B4ED4338913D225FC1A9A91D36 SHA256: 734DC55F56798695D98D7BA13D774ABB54E2326B7B51881FA6DB78EADCC1FB4B

Windows8.1-KB2959977-x64.msu

SHA1: 574BA2D60BAA13645B764F55069B74B2DE866975 SHA256: 3E6A8674CC5A206CAE551426A6BFE254092B11E0501C162F3872FB32FFBC797B

Windows8.1-KB2959977-x86.msu

SHA1: 5CCF761A356BB143B68887F99883D8C24946D2C2 SHA256: C0DA1C3845BA98F5EE5F1CBA1312189422CE1C6BEC95BC9C86270B2BF61751EE

ClearCompressionFlag.exe (arm)

SHA1: 70C52DF15023AD1FA579149F0435E6A2B078FC94 SHA256: 8C05FB101A01B54DE6CC6E22441B528EA1B3CDE211781A8E4258E2F776338841

ClearCompressionFlag.exe (x64)

SHA1: 3104315DB9D84F6A2A56B9621E89EA66A8C27604 SHA256: 9B95973B198EB255C8E85EB72E0AF96482F5AE7547D66AA1B70A7E41602F2548

ClearCompressionFlag.exe (x86)

SHA1: 220EDCA17AE47089FC4DA060915E0DF568EAC4FF SHA256: FC540C0D8DA69D08DBD26F71F817F4925B5725E04E76EE0D0FD89E42D1860A86

Update package detail

Package

Package Size (MB)

Express Download (MB)

​Expanded Package (MB)

KB2919442

10.2

9.0

41.6

KB2919355

690.0

112.2

3,000.7

KB2932046

​48.0

4.60

​455.0

KB2937592

0.3

0.0

1.5

KB2938439

19.5

8.2

64.9

KB2934018

126.0

8.6

476.0

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