Windows 8.1 - Wikipedia

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8/12/2014 Windows 8.1 - Wikipedia, the free encyclopedia

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Windows 8.1

Release of Microsoft Windows operating system

Start screen on Windows 8.1 with update 1

Com pany / developer Microsoft

Re leased to

m anufacturing

August 27, 2013

Gene ral

availabilit y

October 17, 2013 [1]

Latest release8.1 with Update 1 (v6.3.9600) /

April 8, 2014 [2]

Platforms IA-32, x64, ARMv7

Kernel type Hybrid

Preceded by Windows 8 ( 2012)

Official website windows.mi crosoft.com

(http://wi ndows.microsoft.com)

Support stat us

Mainstream support until January 9, 2018

Extended support until January 10, 2023

Upgrading to Windows 8.1 is required for

Windows 8 users to receive support after

January 12, 2016. [3]

Windows 8.1From Wikipedia, the free encyclopedia

Windows 8.1 is a version of the Windows NToperating system and an upgrade for Windows 8.First unveiled and released as a public beta in June2013, it was released to manufacturing on August 27,2013, and reached general availability on October 17,2013, almost a year after the retail release of its

pred ecessor . Windows 8.1 is available free of chargefor retail copies of W indows 8 and Wind ows RTusers via Windows Store. Unlike service packs on

previous versions of Windows, users who obtained 8outside of reta il cop ies or pre-loaded installations (i.e.,volume licensing) must obtain 8.1 through newinstallation media from their re spective subscription or

enterprise ch annel. Mi crosoft's support lifecycle po licytreats Windows 8.1 similar to previous service packsof Windows: It is part of Windows 8's supportlifecycle, and installing 8.1 is required to maintainaccess to support and Windows updates after January12, 2016. However, unlike previous service packs,Win dows 8.1 cannot be acquired via Wind owsUpdate and only accepts 8.1-specific product keys .

Released as part of a shift by Microsoft towards

regular yearly major updates for its platforms andservices, Windows 8.1 was primarily intended toaddress complaints of Windows 8 users andrevie wers on laun ch. Visible enhancements include a nimproved Start screen, additional snap views,additional b undled apps, tighter OneDrive (formerlySkyDrive) integration, Internet E xplorer 11, a Bing-

powered unified search system, restoration of a visib leStart button on the taskbar, and the ability to restorethe previous be havio r of opening th e user's desktop

on login instead of the Start screen. Windows 8.1 alsoadde d support for such emerging t echnologi es as highresolution displays, 3D printing , Wi-Fi Dir ect, andMiracast streaming.

Windows 8.1 received relatively positive reception,with critics praising the expanded functionalityavailable to apps in comparison to 8, its SkyDriveintegration, along with its user interface tweaks and the addition of expanded tutorials for operating theWindows 8 interface. Despite these improvements, 8.1 was still panned for not addressing all of the digressions

of 8 (such as a poor level of integration between Metro-style apps and the desktop interface), and the potential privacy implications of 8.1's expanded use of online services.
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Windows 8.1 was revealed at Build2013, held at San Francisco'sMoscone Center.

Contents

1 History

1.1 Update

2 Distribution

3 New and changed features

3.1 User interface and desktop

3.2 Apps

3.3 Online services and functionality

3.4 Security and hardware compatibility

3.5 Hardware functionality

4 Reception

4.1 Critical reception

4.2 Market share5 References

6 External links

History

In February 2013, ZDNet writer Mary Jo Foley disclosed potential

rumors about "Blue", the codename for a wave of planned updatesacross several Microsoft products and services, including Windows8, Windows Phone 8, Outlook.com, and SkyDrive. In particular, thereport detailed that Microsoft was planning to shift to a more"continuous" development model, which would see major revisions toits main software platforms released on a consistent yearly cycle tokeep up with market demands. Lending credibility to the reports,Foley noted that a Microsoft staff member had listed experience with"Windows Blue" on his LinkedIn profile, and listed it as a separate

operating system from 8. [4][5]

A post-RTM build of Windows 8, build 9364, leaked in March2013. The build, which was believed to be of "Windows Blue",revealed a number of enhancements across Windows 8's interface, including additional size options for tiles,expanded color options on the Start screen, the expansion of PC Settings to include more options that were

previously exclusive to the desktop Control Panel, the ability for apps to snap to half of the screen, the ability totake screenshots from the Share charm, additional stock apps, increased SkyDrive integration (such as

automatic device backups) and Internet Explorer 11. [6][7] Shortly afterward on March 26, 2013, corporate vice president of corporate communications Frank X. Shaw officially acknowledged the "Blue" project, stating thatcontinuous development would be "the new normal" at Microsoft, and that "our product groups are also taking aunified planning approach so people get what they wantall of their devices, apps and services working

together wherever they are and for whatever they are doing." [8]
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In early May, press reports announcing the upcoming version in Financial Times and The Economist

negatively compared Windows 8 to New Coke. [9][10] The theme was then echoed and debated in the computer

press. [11][12][13] Shaw rejected this criticism as "extreme", [14] adding that he saw a comparison with Diet Coke

as more appropriate. [15]

On May 14, Microsoft officially announced that "Blue" would be named Windows 8.1. Following a keynote presentation focusing on this version, the public beta of Windows 8.1 was released on June 26, 2013 during

Build. [16][17][18] Build 9600 of Windows 8.1 was released to OEM hardware partners on August 27, 2013,

and became generally available on October 17, 2013. [19][20] Unlike past releases of Windows and its service packs, volume license customers and subscribers to MSDN Plus and TechNet Plus were unable to obtain theRTM version upon its release; a spokesperson stated that the change in policy was to allow Microsoft to work

with OEMs "to ensure a quality experience at general availability." [21][22] However, after criticism, Microsoft

reversed its decision and released the RTM build on MSDN and TechNet on September 9, 2013. [23] Prior tothe release of 8.1, Microsoft premiered a new television commercial in late-September 2013 that focused on its

changes as part of the "Windows Everywhere" campaign. [24]

Shortly after its release, Windows RT 8.1 was temporarily recalled by Microsoft following reports that someusers had encountered a rare bug which corrupted the operating system's Boot Configuration Data during

installation, resulting in an error on startup. [25][26] On October 21, 2013, Microsoft confirmed that the bug waslimited to the Microsoft Surface RT tablet, and only affected 1 in 1000 installations. The company releasedrecovery media and instructions which could be used to repair the device, and restored access to Windows RT

8.1 the next day. [27][28]

It was also found that changes to screen resolution handling on 8.1 resulted in mouse input lag in certain videogames that do not use the DirectInput API'sparticularly first-person shooter games, including Deus Ex:

Human Revolution , Hitman: Absolution , and Metro 2033 . Users also found the issues to be more pronounced when using gaming mice with high resolution and/or polling rates. Microsoft released a patch to fixthe bug on certain games in November 2013, and acknowledged that it was caused by "changes to mouse-input

processing for low-latency interaction scenarios". [29][30]

Update

On April 8, 2014, Microsoft released "Windows 8.1 Update", which included all past updates plus new

features. [31] It was unveiled by Microsoft vice president Joe Belfiore at Mobile World Congress on February23, 2014, and detailed in full at Microsoft's Build conference on April 2. Belfiore noted that the update wouldlower the minimum system requirements for Windows, so it can be installed on devices with as little as 1 GB of

RAM and 16 GB of storage. [32] Unlike 8.1 itself, this cumulative update is distributed through Windows

Update, and must be installed in order to receive any further patches for Windows 8.1. [33]

At the 2014 Build conference, during April, Microsoft's Terry Myerson unveiled further user interface changesfor Windows 8.1, including the ability to run Metro-style apps inside desktop windows, and a revised Startmenu, which creates a compromise between the Start menu design used by Windows 7 and the Start screen, bycombining the application listing in the first column with a second that can be used to display app tiles. Myerson

stated that these changes would occur in a future update, but did not elaborate further. Microsoft also unveiled aconcept known as "Universal Windows apps", in which a Windows Runtime app can be ported to WindowsPhone 8.1 and Xbox One while sharing a common codebase. While it does not entirely unify Windows' app
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ecosystem with that of Windows Phone, it will allow developers to synchronize data between versions of their app on each platform, and bundle access to Windows, Windows Phone, and Xbox One versions of an app in asingle purchase. [34][35][36][37]

Microsoft originally announced that users who did not install the update would not receive any other updates

after 13 May 2014. [38] However, meeting this deadline proved challenging: The ability to deploy Windows 8.1Update through Windows Software Update Services (WSUS) was disabled shortly after its release following

the discovery of a bug which affects the ability to use WSUS as a whole in certain server configurations. [39]

Microsoft later fixed the issue [40] but users continued to report that the update may fail to install. [38] Microsoft'sattempt to fix the problem was ineffective, to the point that Microsoft pushed the support deadline further to 30

June 2014. [38][41] On 16 May, Microsoft released additional updates to fix a problem of BSOD in the

update. [42]

Distribution

Microsoft markets Windows 8.1 as an "update" for Windows 8, avoiding the term "upgrade." [43] Microsoft'ssupport lifecycle policy treats Windows 8.1 similar to previous service packs of Windows: It is part of Windows8's support lifecycle, and upgrading to 8.1 is required to maintain access to support and Windows updates after

January 12, 2016. [44][3]

Retail and OEM copies of Windows 8, Windows 8 Pro, and Windows RT can be upgraded through WindowsStore free of charge. However, volume license customers, TechNet or MSDN subscribers and users of Windows 8 Enterprise must acquire standalone installation media for 8.1 and install through the traditionalWindows setup process, either as an in-place upgrade or clean install. This requires an 8.1-specific product

key.[45][46][47][48]

Upgrading through Windows Store requires each machine to download an upgrade package as big as 23.6GB. Unlike the traditional Windows service packs, the standalone installer, which could be downloaded once

and installed as many times as needed, requires an 8.1-specific product key. [49]

New retail installation media of Windows 8.1 were released alongside the online upgrade. Unlike their Windows8 counterparts, they can install Windows on computers that do not have an operating system at all. Microsoftstated that the change was in response to customer feedback, and to allow more flexibility for users. Pricing for

the retail copies of 8.1 remained the same. [50]

On July 1, 2014, acknowledging difficulties users may have had through the Windows Store update method,Microsoft introduced a "pilot program" that would allow Windows 8 and RT 8 to be automatically updated to

8.1 through Windows Update. [51]

New and changed features

Many of the changes on Windows 8.1, particularly to the user interface, were made in response to criticisms

from early adopters and other critics after the release of Windows 8. [52][53]

User interface and desktop
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The Start screen received several enhancements on 8.1, including an extended "All Apps" view with sort modes(accessed by clicking a new down arrow button or swiping upward), small and extra-large sizes for tiles, andcolored tiles for desktop program shortcuts. Additional customization options were also added, such asexpanded color options, new backgrounds (some of which incorporating animated elements), and the ability for the Start screen to use the desktop background instead. Applications are no longer added to the Start screenautomatically when installed, and all applications now have colored tiles (desktop programs were previouslyshown in a single color). The app snapping system has also been extended; up to 4 apps can be snapped onto a

single display depending on screen size, apps can be snapped to fill half the screen, and can also be used on anydisplay in a multi-monitor configuration. Apps can also launch other apps in a snapped view to display content;for example, the Mail app can open a photo attachment in a picture viewer snapped to another half of thescreen. Improved support is also provided by apps for using devices in a portrait (vertical) orientation. The lock screen offers the ability to use a photo slideshow as its backdrop, and a shortcut to the Camera app by swipingup. The on-screen keyboard has an improved autocomplete mechanism which displays multiple wordsuggestions, and allows users to select from them by sliding on the spacebar. The autocomplete dictionary isalso automatically updated using data from Bing, allowing it to recognize and suggest words relating to current

trends and events. [54][55] Similarly to Windows Phone, certain apps now display a narrow bar with three dots

on it to indicate the presence of a pop-up menu accessible by swiping, clicking on the dots, or right-clicking. [56]

To improve the usability of the desktop interface, a visible Start button was restored to the taskbar for openingthe Start screen, and the Quick Links menu (accessed by right-clicking the Start button or pressing Win + X ) now contains shutdown and sign-out options. Users can also modify certain user interface

behaviors, such as disabling the upper hot corners for using the charms and recent apps list, going to thedesktop instead of the Start screen on login or after closing all apps on a screen, automatically opening the "AllApps" view on the Start screen when opened, and prioritizing desktop programs on the "Category" sort modeon "All Apps". To assist users in learning the Windows 8 user interface, an interactive tutorial is also offered,

along with a new Help + Tips app for additional information. [53][57] In contrast, Windows RT 8.1 downplays

the desktop interface further by not displaying the Desktop tile on its default Start screen at all (however, it canstill be manually added to the Start screen). [58]

Windows manager Chaitanya Sareen stated that the restoration of the visible Start button was intended to be a"warm blanket" for users who had become confused by the removal of the button on 8; the Start button wasoriginally removed to reflect Windows 8's treatment of the desktop as an "app" rather than the main

interface. [59]

Further interface behavior changes are made on the April 2014 "Windows 8.1 Update", which are orientedtowards non-touch environments (such as desktop and laptop PCs) that use a keyboard and mouse, andimprove integration between Windows Store apps and the desktop. When a mouse is in use, the Desktop isshown on startup by default, the Start screen uses context menus instead of a toolbar across the bottom of thescreen for manipulating tiles, an autohiding title bar with minimize and close buttons is displayed within apps atthe top of the screen, the taskbar can display and pin apps alongside desktop programs and be accessed fromwithin apps, and visible search and power buttons are added to the Start screen. The update also changes thedefault image viewer and media player programs for non-touch devices; Windows Media Player and Windows

Photo Viewer are used by default in lieu of the Xbox Video and Photos apps. [60][61]

Apps

The suite of pre-loaded apps bundled with Windows 8 were changed in 8.1; PC Settings was expanded toinclude options that were previously exclusive to the desktop Control Panel, Windows Store was updated withan improved interface for browsing apps and automatic updates, the Mail app includes an updated interface andadditional features, the Camera app integrates Photosynth for creating panoramas, and additional editing tools
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were added to the Photos app (while integration with Flickr and Facebook was completely removed). Anumber of additional stock apps were also added, including Calculator, Food and Drink, Health and Fitness,Sound Recorder, Reading List (which can be used to collect and sync content from apps through OneDrive),

Scan, and Help + Tips. [62][53] For Windows RT users, 8.1 also adds a version of Microsoft Outlook to theincluded Office 2013 RT suite. However, it does not support data loss protection, Group Policy, Lync

integration, or creating emails with information rights management. [63] Windows Store is enabled by default

within Windows To Go environments. [64]

Online services and functionality

Windows 8.1 adds tighter integration with several Microsoft-owned services. OneDrive (formerly SkyDrive) [65]

is integrated at the system level to sync user settings and files. Files are automatically downloaded in the background when they are accessed from the user's OneDrive folder, unless they are marked to be availableoffline. By default, only file metadata and thumbnails are stored locally, and reparse points are used to give theappearance of a normal directory structure to provide backwards compatibility. The OneDrive app wasupdated to include a local file manager. OneDrive use on 8.1 requires that a user's Windows account be linked

to a Microsoft account; the previous SkyDrive desktop client (which did not have this requirement) is notsupported on 8.1. [66][67][68]

A Bing-based unified search system was added; it can analyze a user's search habits to return results featuringrelevant local and online content. Full-screen "hero" displays aggregate news articles, Wikipedia entries,multimedia, and other content related to a search query; for instance, searching for a music performer would

return photos of the performer, a biography, and their available songs and albums on Xbox Music. [53][54] Themessaging app from Windows 8 has been replaced by Skype, which also allows users to accept calls directly

from the lock screen. [54] Windows 8.1 also includes Internet Explorer 11, which adds support for SPDY and

WebGL, and expanded developer tools. The Metro-style version of IE 11 also adds tab syncing, the ability toopen an unlimited number of tabs, and Reading List integration. [69][70]

Security and hardware compatibility

On compatible hardware, Windows 8.1 also features a transparent "device encryption" system based onBitLocker. Encryption begins as soon as a user begins using the system; the recovery key is stored to either theuser's Microsoft account or an Active Directory login, allowing it to be retrieved from any computer. Whiledevice encryption is offered on all versions of 8.1 unlike BitLocker (which is exclusive to the Pro and Enterprise

editions), device encryption requires that the device meet the Connected Standby specification and have aTrusted Platform Module (TPM) 2.0 chip. [71][72] 8.1 also introduces improved fingerprint recognition APIs,which allows user login, User Account Control, Windows Store and Windows Store apps to use enrolledfingerprints as an authentication method. A new kiosk mode known as "Assigned Access" was also added,allowing a device to be configured to use a single app in a restricted environment. Additionally, WindowsDefender includes an intrusion detection system which can scan network activity for signs of malware. 8.1 also

allows third-party VPN clients to automatically trigger connections. [73]

For enterprise device management, Windows 8.1 adds support for the Workplace Join feature of WindowsServer 2012 R2, which allows users to enroll their own device into corporate networks with finer control over access to resources and security requirements. 8.1 also supports the OMA Device Management specifications.Remote Data Control can be used to remotely wipe specific "corporate" data from Windows 8.1 devices. [64]
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Due to changes to improve its "security effectiveness", the 64-bit version of Windows 8.1 no longer supports processors which do not implement the double-width compare and exchange (CMPXCHG16B) CPUinstruction (which the installer reports as a lack of support for "CompareExchange128"). A Microsoftspokesperson noted that the change primarily affects systems with older AMD 64-bit processors, and that "thenumber of affected processors are extremely small, since this instruction has been supported for greater than 10ears." Even if the system does have an otherwise compatible processor, the motherboard must also support the

instructionwhich can also cause the problem to occur on Intel processors in select cases. These changes do

not affect the 32-bit version of Windows 8.1. [74][75]

Hardware functionality

Windows 8.1 adds support for 3D printing, [76][77] pairing with printers using NFC tags, Wi-Fi Direct, Miracast

media streaming, [78] tethering, [64] and NVMe. [79][80] In response to the increasing pixel density in displays,Windows 8.1 can scale text and GUI elements up to 200% (whereas Windows 8 supported only 150%) and

set scaling settings independently on each display in multi-monitor configurations. [81]

Reception

Critical reception

Windows 8.1 received better reviews than Windows 8. Tom Warren of The Verge still considered the platformto be a "work in progress" due to the number of apps available, the impaired level of capabilities that apps havein comparison to desktop programs, and because he felt that mouse and keyboard navigation was still"awkward". However, he touted many of the major changes on 8.1, such as the expanded snappingfunctionality, increased Start screen customization, SkyDrive and Bing integration, improvements to stock apps,

and particularly he considered the Mail app to be "lightyears ahead" of the original version from 8. He concludedthat "Microsoft has achieved a lot within 12 months, even if a lot of the additions feel like they should have been

there from the very start with Windows 8." [54]

Joel Hruska of ExtremeTech criticized continuing integration problems between the Desktop and apps on 8.1, pointing out examples such as the Photos app, which "still refuses to acknowledge that users might have previous photo directories", and that the Mail app "still cant talk to the desktopif you try to send an emailfrom the Desktop without another mail client installed, Windows will tell you theres no mail client capable of

performing that action." However, improvements to other apps, such as People and News (pointing out UIimprovements, and the News app using proper links when sharing stories, rather than non-standard links thatcan only be recognized by the app). Although praising the more flexible snapping system, he still pointed outflaws, such as an inability to maintain snap configurations in certain situations. 8.1's search functionality was metwith mixed reviews; while noting the Bing integration and updated design, the system was panned for arbitrarily

leaving out secondary storage devices from the "Everything" mode. [82]

Peter Bright of Ars Technica praised many of the improvements on 8.1, such as its more "complete" touchinterface, the "reasonable" tutorial content, the new autocomplete tools on the on-screen keyboard, softwareimprovements, and the deep SkyDrive integration. However, he felt that the transition between the desktop andapps "still tends to feel a bit disjointed and disconnected" (even though the option to use the desktop wallpaper

on the Start screen made it feel more integrated with the desktop interface rather than dissimilar), and that therestoration of the Start button made the two interfaces feel even more inconsistent because of how different it

operates between the desktop and apps. [55]
http://en.wikipedia.org/wiki/Autocompletehttp://en.wikipedia.org/wiki/Ars_Technicahttp://en.wikipedia.org/wiki/ExtremeTechhttp://en.wikipedia.org/wiki/The_Vergehttp://en.wikipedia.org/wiki/Pixel_densityhttp://en.wikipedia.org/wiki/NVMehttp://en.wikipedia.org/wiki/Tetheringhttp://en.wikipedia.org/wiki/Miracasthttp://en.wikipedia.org/wiki/Wi-Fi_Directhttp://en.wikipedia.org/wiki/Near_field_communicationhttp://en.wikipedia.org/wiki/3D_printinghttp://en.wikipedia.org/wiki/AMDhttp://en.wikipedia.org/wiki/Instruction_sethttp://en.wikipedia.org/wiki/Compare-and-swap#Extensions


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http://en.wi kipedia.org/wiki/Windows_8.1 8/13

Certain as pects of 8.1 were also cause for concern because of their privacy implications. In his review of 8.1,Joel Hrus k a noted that Microsoft had deliberately made it harder for users to create a "Local" account that isnot tied to a Microsoft account for syncing, as it "[makes] clear that the company really, really, wants you toshare ever ything you do with it, and thats not something an increasing number of people and businesses are

comfortab le doing." [82] Woody Leonhard of InfoWorld noted that by default Windows 8.1's "Smart Search"system se nds search queries and other information to Microsoft, which could be used for targeted advertising.Leonhard considered this to be ironic, given that Microsoft had criticized Google's use of similar tactics with its

"Scroogle d" advertising campaign. [83]

Market share

On the inf or mation gathered by Net Applications, adoption rate in June 2014 for Windows 8.1 was at 6.61%,

while the or iginal Windows 8 was at 5.93%. [84]

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432 710.shtml). Softpedia . SoftNews. Retrieved March 18, 2014.

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13/13


Wikimedia Commons hasmedia related to Microsoft

Windows 8 .

Exter nal links

Off icial website (http://windows.microsoft.com)

Co m pare Windows 8.1 Editions

(htt p://www.microsoft.com/en-

us/windows/enterprise/products-and-technologies/windows-8-1/compare/default.aspx)

Retrieved f rom "http://en.wikipedia.org/w/index.php?title=Windows_8.1&oldid=620586925"Categorie s: 2013 software Windows 8 IA-32 operating systems X86-64 operating systems

This page was last modified on 10 August 2014 at 02:54.Tex t is available under the Creative Commons Attribution-ShareAlike License; additional terms mayapp ly. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia is a registeredtrad emark of the Wikimedia Foundation, Inc., a non-profit organization.

Neowin. Neowin, LLC. Retrieved October 26, 2013.

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8-1 -to-natively-support-3d-printing/). Engadget . Retrieved August 6, 2013.

77. ^ "3D Printing Support in Windows 8.1 Explained"

(htt p://blogs.windows.com/windows/b/extremewindows/archive/2013/08/22/3d-printing-support-in-windows-

8-1 -ex plained.aspx). Extreme Windows . Microsoft. Retrieved August 22, 2013.

78. ^ "Modern Business in Mind: Windows 8.1 at TechEd 2013"(htt p://blogs.windows.com/windows/b/business/archive/2013/06/03/modern-business-in-mind-windows-8-1-

at-t eched-2013.aspx). Blogs.windows.com. June 3, 2013. Retrieved June 3, 2013.

79. ^ Her ron, Andy (2013). "Advancements in Storage and File Systems in Windows 8.1"

(htt p://snia.org/sites/default/files2/SDC2013/presentations/FileSystems/AndyHeron_Enhancements_To_Win81_

Sto rage.pdf) (PDF). snia.org . Retrieved 2014-01-11.

80. ^ "Windows 8.1 to support hybrid disks and adds native NVMe driver"

(htt p://www.myce.com/news/windows-8-1-to-support-hybrid-disks-and-native-nvme-driver-68663/).

Myce.com. 2013-09-06. Retrieved 2014-01-11.

81. ^ "Windows 8.1 DPI Scaling Enhancements"

(htt p://blogs.windows.com/windows/b/extremewindows/archive/2013/07/15/windows-8-1-dpi-scaling-

enhancements.aspx). Extreme Windows . Microsoft. Retrieved 26 November 2013.

82. ^ a b "Windows 8.1 and the Desktop: A modest improvement we still cant recommend"

(htt p://www.extremetech.com/computing/168910-windows-8-1-and-the-desktop-a-modest-improvement-we-

still-c ant-recommend/). ExtremeTech. 2013-10-18. Retrieved 2014-01-05.

83. ^ "Windows 8.1's 'Hero' ads brought to you by stealthy snooping" (http://www.infoworld.com/t/microsoft-

win dows/windows-81s-hero-ads-brought-you-stealthy-snooping-229907). InfoWorld . Retrieved 24 January

201 4.84. ^ "O perating system market share" (http://www.netmarketshare.com/operating-system-market-share.aspx?

qprid=11&qpcustomb=0). Retrieved 2014-07-04.
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Documents

Windows 8.1 - Wikipedia