# Windows 10, version 1511

Windows 10 November Update (also known as version 1511 and codenamed "Threshold 2") is the first major update to Windows 10 and the second version of the operating system. It carries the build number 10.0.10586.

## PC version history

New features in this version of Windows 10 include:
* Pre-installed Skype video, messaging, and phone apps
* Tab previews and syncing in Microsoft Edge
* Visual and functional tweaks
The first preview was released on August 18, 2015. The final release was made available to Windows Insiders on November 3, 2015, followed by a public release on November 12, 2015. Unlike the initial release of Windows, this branch was also made available to existing Windows Phone 8.1 devices and the Xbox One and as a preview release to Windows Server 2016, and was pre-installed on new Windows 10 Mobile devices.
The update has reached end of service on October 10, 2017 in the Current Branch and Current Branch for Business. Supplemental servicing for the Enterprise and Education editions was available until April 10, 2018.
Preview builds of Windows 10, version 1511 :
| Version | Release date(s) | Highlights |
| 10.0.10525 | Fast ring: August 18, 2015 | Updated color options Memory Manager improvements |
| 10.0.10532 | Fast ring: August 27, 2015 | Share functionality added to Windows Feedback app Redesigned context menus |
| 10.0.10547 | Fast ring: September 18, 2015 | Start menu tile columns can be expanded by 33% Increased Start menu tile limit to 2048 Tablet mode improvements Logon screen background can now be disabled |
| 10.0.10565 | Fast ring: October 12, 2015 Slow ring: October 16, 2015 | Tab preview added to Microsoft Edge Microsoft Edge improvements Context menu improvements Title bar improvements Updated icons Device activation improvements |
| 10.0.10576 | Fast ring: October 29, 2015 | Media Casting added to Microsoft Edge |
| Version | Release date(s) | Highlights |
Public patches of Windows 10, version 1511 :
| Version | Knowledge base | Release date(s) | Highlights |
| 10.0.10586 Version 1511 | | Fast ring: November 5, 2015 Slow ring: November 9, 2015 Public release: November 12, 2015 | In this build BitLocker adds support for XTS-AES encryption algorithm. Other security related features include Enhanced Credential Guard. In the Settings app, under Privacy, Call History and Email are now included. Starting with this build, Windows Spotlight is available on the Windows 10 Pro edition. |
| 10.0.10586.3 | KB3105211 | Fast and slow ring: November 10, 2015 | |
| 10.0.10586.11 | KB3118754 | Fast ring, slow ring and public release: November 18, 2015 | |
| 10.0.10586.14 | KB3120677 | Fast ring, slow ring and public release: November 24, 2015 | |
| 10.0.10586.17 | KB3116908 | Fast ring, slow ring and public release: December 2, 2015 | |
| 10.0.10586.29 | KB3116900 | Fast ring, slow ring and public release: December 8, 2015 | |
| 10.0.10586.36 | KB3124200 | Fast ring, slow ring and public release: December 17, 2015 | |
| 10.0.10586.63 | KB3124263 | Slow ring and public release: January 12, 2016 | |
| 10.0.10586.71 | KB3124262 | Slow ring and public release: January 27, 2016 | |
| 10.0.10586.104 | KB3135173 | Slow ring and public release: February 9, 2016 | |
| 10.0.10586.122 | KB3140743 | Slow ring, release preview and public release: March 2, 2016 | |
| 10.0.10586.164 | KB3140768 | Slow ring, release preview and public release: March 8, 2016 | |
| 10.0.10586.218 | KB3147458 | Release preview and public release: April 12, 2016 | |
| 10.0.10586.240 | | Release preview: April 28, 2016 | This cumulative update brings improved UI for tracking data under Networking and Wireless > Data Usage in the Settings app. |
| 10.0.10586.318 | KB3156421 | Release preview and public release: May 10, 2016 | This update enables UWP apps and games to unlock frame rate. This will allow UWP games to disable V-sync and enable the use of third-party features such as Nvidia G-Sync and FreeSync. |
| 10.0.10586.420 | KB3163018 | Public release: June 14, 2016 | |
| 10.0.10586.589 | KB3185614 | Public release: September 13, 2016 | |
| 10.0.10586.679 | KB3198586 | Public release: November 8, 2016 | |
| 10.0.10586.713 | KB3205386 | Public release: December 13, 2016 | |
| 10.0.10586.753 | KB3210721 | Public release: January 10, 2017 | |
| 10.0.10586.839 | KB4013198 | Public release: March 14, 2017 | |
| 10.0.10586.842 | KB4016636 | Public release: March 22, 2017 | |
| 10.0.10586.873 | KB4015219 | Public release: April 11, 2017 | |
| 10.0.10586.916 | KB4019473 | Public release: May 9, 2017 | |
| 10.0.10586.962 | KB4022714 | Public release: June 13, 2017 | |
| 10.0.10586.965 | KB4032693 | Public release: June 27, 2017 | |
| 10.0.10586.1007 | KB4025344 | Public release: July 11, 2017 | |
| 10.0.10586.1045 | KB4034660 | Public release: August 8, 2017 | |
| 10.0.10586.1106 | KB4038783 | Public release: September 12, 2017 | |
| 10.0.10586.1176 | KB4041689 | Public release: October 10, 2017 | |
| 10.0.10586.1177 | KB4052232 | Public release: November 2, 2017 | This update is available for Enterprise and Education editions only. |
| 10.0.10586.1232 | KB4048952 | Public release: November 14, 2017 | This update is available for Enterprise and Education editions only. |
| 10.0.10586.1295 | KB4053578 | Public release: December 12, 2017 | This update is available for Enterprise and Education editions only. |
| 10.0.10586.1356 | KB4056888 | Public release: January 3, 2018 | This update is available for Enterprise and Education editions only. |
| 10.0.10586.1358 | KB4075200 | Public release: January 18, 2018 | This update is available for Enterprise and Education editions only. |
| 10.0.10586.1417 | KB4074591 | Public release: February 13, 2018 | This update is available for Enterprise and Education editions only. |
| 10.0.10586.1478 | KB4088779 | Public release: March 13, 2018 | This update is available for Enterprise and Education editions only. |
| 10.0.10586.1540 | KB4093109 | Public release: April 10, 2018 | This final update is available for Enterprise and Education editions only. |
| Version | Knowledge base | Release date(s) | Highlights |