In this story we summarize what you need to know about each update released to the public for the most recent versions of Windows 10 — versions20H2, and 21H1. Microsoft releases updates for those three versions together. The most recent updates appear first. Note that Microsoft has not yet begun actively pushing Windows 10 21H1 to most users. You can seek out and install the release on your PC, but why rush things?
In fact, we recommend keeping 21H1 off your machine for now to avoid any bugs that may crop up with the new release. This out-of-band build fixes a bug that may prevent you from opening PDFs using Internet Explorer 11 or apps that use the bit version of the WebBrowser control.
You might need to enter the characters manually. Get more info about KB This build addresses about three dozen bugs, including one in which signing windows 10 quality updates explained & the end of delta updates free download using a PIN fails, and another that might cause a VPN to fail after renewing a user auto-enrolled certificate.
It also removes Adobe Flash from your PC and makes improvements to the servicing stack, the component that installs Windows updates. This out-of-band build fixes a bug that might redirect you to the Microsoft Store page for Gaming Services when you try to install or start an Xbox Game Pass game on your Windows 10 device.
Additionally, you might receive error 0xD26 or 0xF. For more information, see KB In addition, the build makes improvements to the servicing stack, the component that installs Windows updates. This build includes improvements to the servicing stack, which is the component that installs Windows updates. It also includes changes for verifying user names and passwords and for storing and managing files.
What IT needs to know: Because this is a security update, it should be applied relatively soon. Over the next few weeks, check for reports about problematic issues, and if all seems well, apply the update. There are several known issues in this update, including one in which system and user certificates might be lost when updating a device from Windows 10 version or later to a later version of Windows Devices using Windows Update for Business or that connect directly to Windows Update are not impacted.
This build adds the Open on hover option which is checked by default to the News and interests menu. To access it, right-click a blank space on the Windows taskbar and open the News and interests menu. In addition, it makes quality improvements to the servicing stack, which is the component that installs Windows updates.
It also includes a wide variety of small bug fixes, including one that displayed items on the desktop after they have been deleted from the desktop, and another that caused configuration problems with devices that were configured using mobile device management MDM RestrictedGroupsLocalUsersAndGroupsor UserRights policies. Get more info about KB Preview.
This is a relatively minor update, but it does have a few new features. This update gives you quick access to an integrated feed of dynamic content, such as news, weather, sports, and more, that updates throughout the day, via the Windows taskbar. You can personalize the feed to match your interests. In addition, devices with Windows installations created from custom offline media or custom ISO images might have the legacy version of Microsoft Edge removed by the update, but not automatically replaced by the new Microsoft Edge.
For details, see Microsoft's Security Update Guide website. There are several other security issues addressed, including fixing a potential elevation of privilege vulnerability in the way Azure Active Directory web sign-in allows arbitrary browsing from the third-party endpoints used for federated authentication.
In this build, Microsoft also removed the Microsoft Edge legacy browser and replaced it with the new Chromium-based Edge. This update fixes a variety of minor bugs, including one that made high dynamic range HDR screens appear much darker than expected, and another that caused video playback to be out of sync in duplicate mode with multiple monitors.
There are several known issues in this build, including one in which System and user certificates might be lost when updating a device from Windows 10 version or later to a later version of Windows There is one known issue in this update, in which system and user certificates may be lost when updating a device from Windows 10 version or later to a later version of Windows This out-of-band update fixes a single bug, which caused a blue screen when you attempted to print to certain printers using some apps.
For details, see the Microsoft Security Update Guide. There are three known issues in this update, including one in which system and user certificates might be lost when updating a device from Windows 10 version This update fixes a variety of minor bugs, including one that caused video playback to flicker when rendering on certain low-latency capable monitors, and another that sometimes prevented the input of strings into the Input Method Editor IME.
This update fixes a bug and includes a variety of security updates. This build fixes a variety of security vulnerabilities, including one with HTTPS-based intranet servers, and a security bypass vulnerability in the way the Printer Remote Procedure Call RPC binding handles authentication for the remote Winspool interface.
For details see the Microsoft Security Update Guide. There are two known issues in this update, including one in which system and user certificates might be lost when updating a device from Windows 10, version This build fixes a wide variety of bugs, including one that caused Narrator to stop responding after you unlock a device if the app was in use before you locked the device, and another that made makes the touch keyboard unstable in the Mail app.
There are two windows 10 quality updates explained & the end of delta updates free download issues in this update, one in which system and user certificates might be lost when updating a device from Windows 10 version or later to a later version of Windows 10, and another in which users of the Microsoft Input Method Editor IME for Japanese or Chinese languages might experience issues when attempting various tasks.
This minor build windows 10 quality updates explained & the end of delta updates free download issues with Kerberos authentication related to the PerformTicketSignature registry subkey value in CVE, which was windows 10 quality updates explained & the end of delta updates free download part of the November 10, Windows update.
There are two known issues in this update, one in which system and user certificates might be lost when updating a device from Windows 10, version or later to a later version of Windows 10, and another in which users of the Microsoft Input Method Editor IME for Japanese or Chinese languages might experience issues when attempting various tasks. For details see the release notes for November Security Updates.
There are two known issues in this update, including one in which system and user certificates might be lost when updating a device from Windows 10 version or later to a later version of Windows 10, and another in which users of the Microsoft Input Method Editor IME for Japanese or Chinese languages might experience issues when attempting various tasks. This update makes it easier to connect to others in Skype, using Meet Now from the taskbar.
In addition, there are a wide variety of bug fixes, including for one that displayed the incorrect CPU frequency for certain processors, another that displayed nothing on the screen for five minutes or more during a Remote Desktop Protocol RDP session, and another that caused the Docker pull operation to fail due to a Code Integrity CI Policy that blocks the import of a Windows container image.
This is a relatively minor update but does have a few new features. What IT needs to know: Windows 10 version 20H2 also has a variety of small changes of note for sysadmins and those in IT. This build fixes a few minor bugs and includes a variety of security updates.
Among the bugs fixed are an issue with creating null ports using the user interface, and another issue with a possible elevation of privilege in win32k. This build reduces distortions and aberrations in Windows Mixed Reality head-mounted displays and fixes a wide variety of bugs, including one that caused random line breaks when you redirect PowerShell console error output, and another that that prevented the Language Bar from appearing when a user signs in to a new session.
The build also fixes a security vulnerability issue with user proxies and HTTP-based intranet servers, and addresses an issue with a possible elevation of privileges in windowmanagement. This build fixes a laundry list of minor bugs, including one that prevented apps from downloading an update or opening in certain scenarios, another that prevented users from reducing the size of windows and another that caused File Explorer to stop working when you browsed directories of RAW images and other file types.
The build also fixes an issue in Universal Windows Platform UWP apps that allows single sign-on authentication when an app does not have the Enterprise Authentication capability. What IT needs to know : Because this is a security update, it should be applied relatively soon. There is one known issue in this build: When using windows 10 quality updates explained & the end of delta updates free download apps, such as Microsoft Excel, users of the Microsoft Input Method Editor IME for Chinese and Japanese might receive an error, or the windows 10 quality updates explained & the end of delta updates free download might stop responding or close when attempting to drag using the mouse.
This minor build addresses a wide variety of bugs and issues, including one that caused the Settings page to close unexpectedly, which prevented default applications from being set up properly, and another that prevented some applications from printing to network printers.
There is one known issue in this build, in which when using some apps such as Excel, users of the Microsoft Input Method Editor IME for Chinese and Japanese might receive an error, or the app might stop responding or close when users attempt to drag using windows 10 quality updates explained & the end of delta updates free download mouse.
This build fixes several bugs, including one that might prevent you from connecting to OneDrive using the OneDrive app. For details, see the Release notes for the July Security Updates. There is one known issue in this build, in which when using some apps, such as Microsoft Excel, users of the Microsoft Input Method Editor IME for Chinese and Japanese might receive an error, or the app might stop responding or close when attempting to drag using the mouse.
This minor build fixes a single issue, in which certain printers could not print, generated print errors, or caused apps and print spoolers to close unexpectedly. There is one known issue in this build, which affects the ImeMode property to control the Input Method Editor IME mode for individual text entry fields to increase typing efficiency.
Some IMEs in windows 10 quality updates explained & the end of delta updates free download build might have issues using the ImeMode property with certain apps, for example the input mode will not switch automatically to Kanji or Hiragana. Versioncalled the Windows 10 May Update, is the most recent update to Windows This is a relatively minor update but does have a variety of new features for both users and system administrators.
Here are the latest Insider stories. More Insider Sign Out. Sign In Register. Sign Out Sign In Register. Latest Insider. Check out the latest Insider stories here. More from the IDG Network. Windows 10 Insider Previews: A guide to the builds. Windows 10 version 21H1: Key enterprise features. Office A guide to the updates. How to block the Windows 10 May Update, version 21H1, from installing.
Office release calendar: Mark Windows 10 update and retirement FAQ: Windows 10, now with more upgrade Show More. Learn how IT leaders are building cyberdefenses. Microsoft Software Updates. Currently reading. Windows A guide to the updates. Office release calendar: Mark these dates. Windows 10 update and retirement calendar: Mark these FAQ: Windows 10, now with more upgrade skipping.