April 13, 2021—KB5001339 (OS Build 17134.2145

April 13, 2021—KB5001339 OS Build 17134.2145 NEW 4/13/21 IMPORTANT Windows 10, version 1803, all editions, will reach end of service on May 11, 2021. After May 11, 2021, devices running Windows 10, version 1803 will no longer receive monthly security and quality updates that contain protection fr...

April 13, 2021—KB5001340 (OS Build 10240.18906)

April 13, 2021—KB5001340 OS Build 10240.18906 3/9/21 IMPORTANT As part of the end of support for Adobe Flash, KB4577586 is now available as an optional update from Windows Update WU and Windows Server Update Services WSUS. Installing KB4577586 will remove Adobe Flash Player permanently from your...

September 8, 2020—KB4577048 (Security-only update)

September 8, 2020—KB4577048 Security-only update IMPORTANT Windows Server 2012 has reached the end of mainstream support and is now in extended support. Starting in July 2020, there will no longer be optional releases known as "C" or "D" releases for this operating system. Operating systems in...

October 13, 2020—KB4580358 (Security-only update)

October 13, 2020—KB4580358 Security-only update NEW IMPORTANT Release notes are changing! To learn about the new URL, metadata updates, and more, see What’s next for Windows release notes. IMPORTANT Windows 8.1 and Windows Server 2012 R2 have reached the end of mainstream support and are now in...

August 11, 2020—KB4571723 (Security-only update)

August 11, 2020—KB4571723 Security-only update IMPORTANT Windows 8.1 and Windows Server 2012 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases known as "C" releases for this operating syste...

August 11, 2020—KB4571719 (Security-only update)

August 11, 2020—KB4571719 Security-only update IMPORTANT Starting in July 2020, all Windows Updates will disable the RemoteFX vGPU feature because of a security vulnerability. For more information about the vulnerability, seeCVE-2020-1036 and KB4570006. After you install this update, attempts to...

August 11, 2020—KB4571703 (Monthly Rollup)

August 11, 2020—KB4571703 Monthly Rollup IMPORTANT Windows 8.1 and Windows Server 2012 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases known as "C" releases for this operating system...

July 14, 2020—KB4565540 (Security-only update)

July 14, 2020—KB4565540 Security-only update NEW IMPORTANT Windows 8.1 and Windows Server 2012 R2 have reached the end of mainstream support and are now in extended support. Starting in July 2020, there will no longer be optional, non-security releases known as "C" releases for this operating...

July 14, 2020—KB4565483 (OS Builds 18362.959 and 18363.959) - EXPIRED

July 14, 2020—KB4565483 OS Builds 18362.959 and 18363.959 - EXPIRED NEW 8/5/21 EXPIRATION NOTICEIMPORTANT As of 8/5/2021, this KB is no longer available from Windows Update, the Microsoft Update Catalog, or other release channels. We recommend that you update your devices to the latest security...