MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information" section. LDR service branches contain hotfixes in addition to widely released fixes. GDR service branches contain only those fixes that are widely released to address widespread, critical issues. 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: Additionally, the dates and the times may change when you perform certain operations on the files. 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. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The global version of this update installs files that have the attributes that are listed in the following tables. This update does not replace a previously released update. You may have to restart the computer after you apply this update. To apply this update, you do not have to make any changes to the registry.
To install this update, you must have April 2014, update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file. Microsoft used the most current virus-detection software that was available on the date that the file was posted.
Note The update for Windows RT 8.1 can be obtained only from Windows Update.įor more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:ġ19591 How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. The following files are available for download from the Microsoft Download Center:Īll supported x86-based versions of Windows 8.1Īll supported 圆4-based versions of Windows 8.1 For more information on how to run Windows Update, see How to get an update through Windows Update. This update is provided as an Optional update on Windows Update. Note This update enables OEMs to customize the driver for new devices that use different vendor IDs or product IDs and still keep Windows Store apps supported. For more information, see Add language packs to Windows. If you do, the language-specific changes in the update will not be applied, and you will have to reinstall the update. Important Do not install a language pack after you install this update.
The inbox drivers for Magnetic stripe reader (MSR) Human Interface Devices (HID) have a limited number of supported devices from two Original equipment manufacturers (OEM), MagTek and iD Tech, and are not extensible to support more devices. Before you install this update, see the Prerequisites section. An update is available to resolve this issue. This article describes an issue in which magstripe drivers in Windows 8.1 or Windows RT 8.1 have a limited number of supported devices. Windows 8.1 Enterprise Windows 8.1 Pro Windows 8.1 Windows RT 8.1 More.