Windows 10 update history

Windows 10, version 1909 and Windows Server, version 1909

Updates for Windows 10, version 1909 and Windows Server, version 1909

Windows 10 is a service, which means it gets better through periodic software updates.

The great news is you usually don’t have to do anything! If you have enabled automatic updates, new updates will automatically download and install whenever they’re available, so you don’t have to think about it.

On the left side of this page, you’ll find a list of all the updates released for this version of Windows. You can also find more information about releases and any known issues. Installing the most recent update ensures that you also get any previous updates you might have missed, including any important security fixes.

For more information about the update and how to get it, see:

What’s new for Windows 10, version 1909 and Windows 10, version 1903 release notes

Windows 10, versions 1903 and 1909 share a common core operating system and an identical set of system files. As a result, the new features in Windows 10, version 1909 were included in the recent monthly quality update for Windows 10, version 1903 (released October 8, 2019), but are currently in a dormant state. These new features will remain dormant until they are turned on using an enablement package, which is a small, quick-to-install “master switch” that simply activates the Windows 10, version 1909 features.

To reflect this change, the release notes for Windows 10, version 1903 and Windows 10, version 1909 will share an update history page. Each release page will contain a list of addressed issues for both 1903 and 1909 versions. Note that the 1909 version will always contain the fixes for 1903; however, 1903 will not contain the fixes for 1909. This page will provide you with the build numbers for both 1909 and 1903 versions so that it will be easier for support to assist you if you encounter issues.

For more details about the enablement package and how to get the feature update, see the Windows 10, version 1909 delivery options blog.

Current status of Windows 10, version 1909 and Windows Server, version 1909

For the most up-to-date information about Known Issues for Windows and Windows Server, please go to the Windows release health dashboard.

Notes and messages

General

IMPORTANT Release notes are changing! To learn about the new URL, metadata updates, and more, see What’s next for Windows release notes.

IMPORTANT Starting in July 2020, we will resume non-security releases for Windows 10 and Windows Server, version 1809 and later. There is no change to the cumulative monthly security updates (also referred to as the «B» release or Update Tuesday release). For more information, see the blog post Resuming optional Windows 10 and Windows Server non-security monthly updates.

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 start virtual machines (VM) that have RemoteFX vGPU enabled will fail, and messages such as the following will appear:

If you re-enable RemoteFX vGPU, a message similar to the following will appear:

“The virtual machine cannot be started because all the RemoteFX-capable GPUs are disabled in Hyper-V Manager.”

“The virtual machine cannot be started because the server has insufficient GPU resources.”

«We no longer support the RemoteFX 3D video adapter. If you are still using this adapter, you may become vulnerable to security risk. Learn more (https://go.microsoft.com/fwlink/?linkid=2131976)”

What’s new for Windows 10, version 1909 and Windows 10, version 1903 release notes

Windows 10, versions 1903 and 1909 share a common core operating system and an identical set of system files. As a result, the new features in Windows 10, version 1909 were included in the recent monthly quality update for Windows 10, version 1903 (released October 8, 2019), but are currently in a dormant state. These new features will remain dormant until they are turned on using an enablement package, which is a small, quick-to-install “master switch” that simply activates the Windows 10, version 1909 features.

To reflect this change, the release notes for Windows 10, version 1903 and Windows 10, version 1909 will share an update history page. Each release page will contain a list of addressed issues for both 1903 and 1909 versions. Note that the 1909 version will always contain the fixes for 1903; however, 1903 will not contain the fixes for 1909. This page will provide you with the build numbers for both 1909 and 1903 versions so that it will be easier for support to assist you if you encounter issues.

For more details about the enablement package and how to get the feature update, see the Windows 10, version 1909 delivery options blog.

Troubleshooting

If you have questions or need help activating or troubleshooting Windows, see our help topics below:

For information about how to update, see Update Windows 10.

If you have questions about manually installing or removing an update, see Windows Update: FAQ.

Getting an error message when updating? See Troubleshoot problems updating Windows 10.

If you need to activate Windows, see Activation in Windows 10. If you’re having trouble with activation, see Get help with Windows activation errors.

To get the latest major update to Windows 10, see Get the Windows 10 November 2019 Update.

Windows 10 and Windows Server 2019 update history

Windows 10, version 1809, Windows Server, version 1809, and Windows Server 2019

March 8, 2019 11:15 PM PST

Windows Update customers were recently affected by a network infrastructure event on January 29, 2019 (21:00 UTC), caused by an external DNS service provider’s global outage. A software update to the external provider’s DNS servers resulted in the distribution of corrupted DNS records that affected connectivity to the Windows Update service. The DNS records were restored by January 30, 2019 (00:10 UTC), and the majority of local Internet Service Providers (ISP) have refreshed their DNS servers and customer services have been restored.

While this was not an issue with Microsoft’s services, we take any service disruption for our customers seriously. We will work with partners to better understand this so we can provide higher quality service in the future even across diverse global network providers.

If you are still unable to connect to Windows Update services due to this problem, please contact your local ISP or network administrator. You can also refer to our new KB4493784 for more information to determine if your network is affected, and to provide your local ISP or network administrator with additional information to assist you.

Windows 10, version 1809, Windows Server, version 1809, and Windows Server 2019 re-released

On November 13, 2018, we re-released the Windows 10 October Update (version 1809), Windows Server 2019, and Windows Server, version 1809. We encourage you to wait until the feature update is offered to your device automatically. A summary of the current status of the October Update can be found below.

Note for Commercial Customers: November 13 marks the revised start of the servicing timeline for the Semi-Annual Channel (“Targeted”) releasefor Windows 10, version 1809, Windows Server 2019, and Windows Server, version 1809. Beginning with this release, all future feature updates of Windows 10 Enterprise and Education editions that release around September will have a 30-month servicing timeline.

For more information about the update and how to get it, see:

Windows 10 update history

Windows 10, version 1903 and Windows Server, version 1903

Updates for Windows 10, version 1903 and Windows Server, version 1903

Windows 10 is a service, which means it gets better through periodic software updates.

The great news is you usually don’t have to do anything! If you have enabled automatic updates, new updates will automatically download and install whenever they’re available, so you don’t have to think about it.

On the left side of this page, you’ll find a list of all the updates released for this version of Windows. You can also find more information about releases and any known issues. Installing the most recent update ensures that you also get any previous updates you might have missed, including any important security fixes.

Current status of Windows 10, version 1903 and Windows Server, version 1903

For the most up-to-date information about Known Issues for Windows and Windows Server, please go to the Windows release health dashboard.

Notes and messages

General

IMPORTANT Release notes are changing! To learn about the new URL, metadata updates, and more, see What’s next for Windows release notes.

IMPORTANT Starting in July 2020, we will resume non-security releases for Windows 10 and Windows Server, version 1809 and later. There is no change to the cumulative monthly security updates (also referred to as the «B» release or Update Tuesday release). For more information, see the blog post Resuming optional Windows 10 and Windows Server non-security monthly updates.

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 start virtual machines (VM) that have RemoteFX vGPU enabled will fail, and messages such as the following will appear:

If you re-enable RemoteFX vGPU, a message similar to the following will appear:

“The virtual machine cannot be started because all the RemoteFX-capable GPUs are disabled in Hyper-V Manager.”

“The virtual machine cannot be started because the server has insufficient GPU resources.”

«We no longer support the RemoteFX 3D video adapter. If you are still using this adapter, you may become vulnerable to security risk. Learn more (https://go.microsoft.com/fwlink/?linkid=2131976)”

What’s new for Windows 10, version 1909 and Windows 10, version 1903 release notes

Windows 10, versions 1903 and 1909 share a common core operating system and an identical set of system files. As a result, the new features in Windows 10, version 1909 were included in the recent monthly quality update for Windows 10, version 1903 (released October 8, 2019), but are currently in a dormant state. These new features will remain dormant until they are turned on using an enablement package, which is a small, quick-to-install “master switch” that simply activates the Windows 10, version 1909 features.

To reflect this change, the release notes for Windows 10, version 1903 and Windows 10, version 1909 will share an update history page. Each release page will contain a list of addressed issues for both 1903 and 1909 versions. Note that the 1909 version will always contain the fixes for 1903; however, 1903 will not contain the fixes for 1909. This page will provide you with the build numbers for both 1909 and 1903 versions so that it will be easier for support to assist you if you encounter issues.

For more details about the enablement package and how to get the feature update, see the Windows 10, version 1909 delivery options blog.

End of servicing

IMPORTANT Windows 10, version 1903 will reach end of servicing on December 8, 2020. To continue receiving security and quality updates, Microsoft recommends that you update to the latest version of Windows 10. If you want to update to Windows 10, version 1909, you must use the Enablement Package KB4517245(EKB). Using the EKB makes updating faster and easier and requires a single restart. For more information, see Windows 10, version 1909 delivery options.

Troubleshooting

If you have questions or need help activating or troubleshooting Windows, see our help topics below:

For information about how to update, see Update Windows 10.

If you have questions about manually installing or removing an update, see Windows Update: FAQ.

Getting an error message when updating? See Troubleshoot problems updating Windows 10.

If you need to activate Windows, see Activation in Windows 10. If you’re having trouble with activation, see Get help with Windows activation errors.

To get the latest major update to Windows 10, see Get the Windows 10 October 2018 Update.

Get the Windows 10 October 2020 Update

When the Windows 10 October 2020 Update is ready for your device, it will be available to download from the Windows Update page in Settings. Choose a time that works best for you to download the update. You’ll then need to restart your device and complete the installation. After that, your device will be running Windows 10, version 20H2. (To check whether you’re already running the October 2020 Update, select View update history on the Windows Update settings page.) Also note the following:

If you want to install the update now, select Start > Settings > Update & Security > Windows Update , and then select Check for updates. If updates are available, install them.

If version 20H2 isn’t offered automatically through Check for updates, you can get it manually through the Update Assistant.

If you run into problems updating your device, including problems with previous major updates, see common fixes at Troubleshoot problems updating Windows 10, or use Fix Windows update issues to step you through the troubleshooting process.

If you’re warned by Windows Update that you don’t have enough space on your device to install the update, see Free up space.

If you experience internet connection issues while updating your device, see Fix network connection issues in Windows.

If you’re still running Windows 7 or Windows 8.1 and want to make the move to Windows 10, you can learn more at Upgrade to Windows 10: FAQ.

What’s new in Windows 10, version 1909 for IT Pros

Applies to

• WindowsВ 10, version 1909

This article lists new and updated features and content that are of interest to IT Pros for Windows 10, version 1909, also known as the Windows 10 November 2019 Update. This update also contains all features and fixes included in previous cumulative updates to Windows 10, version 1903.

Servicing

Windows 10, version 1909 is a scoped set of features for select performance improvements, enterprise features and quality enhancements.

To deliver these updates in an optimal fashion, we are providing this feature update in a new way: using servicing technology. Users that are already running Windows 10, version 1903 (the May 2019 Update) will receive this update similar to how they receive monthly updates. If you are running version 1903, then updating to the new release will have a much faster update experience because the update will install like a monthly update.

If you are updating from an older version of Windows 10 (version 1809 or earlier), the process of updating to the current version will be the same as it has been for previous Windows 10 feature updates. For more information, see Evolving Windows 10 servicing and quality: the next steps.

Note: Devices running the Enterprise, IoT Enterprise, or Education editions of Windows 10, version 1909 receive 30 months of support. For more information about the Windows servicing lifecycle, please see the Windows lifecycle fact sheet.

Windows Server Update Services (WSUS)

Pre-release Windows 10 feature updates are now available to IT administrators using WSUS. Microsoft Endpoint Manager version 1906 or later is required. For more information, see Publishing pre-release Windows 10 feature updates to WSUS.

The Windows 10, version 1909 enablement package will be available on WSUS as KB4517245, which can be deployed on existing deployments of Windows 10, version 1903.

Windows Update for Business (WUfB)

If you are using WUfB, you will receive the Windows 10, version 1909 update in the same way that you have for prior feature updates, and as defined by your feature update deferral policy.

Security

Windows Defender Credential Guard

Windows Defender Credential Guard is now available for ARM64 devices, for additional protection against credential theft for enterprises deploying ARM64 devices in their organizations, such as Surface Pro X.

Microsoft BitLocker

BitLocker and Mobile Device Management (MDM) with Azure Active Directory work together to protect your devices from accidental password disclosure. Now, a new key-rolling feature securely rotates recovery passwords on MDM managed devices. The feature is activated whenever Microsoft Intune/MDM tools or a recovery password is used to unlock a BitLocker protected drive. As a result, the recovery password will be better protected when users manually unlock a BitLocker drive.

Key-rolling and Key-rotation

Windows 10, version 1909 also includes two new features called Key-rolling and Key-rotation enables secure rolling of Recovery passwords on MDM managed AAD devices on demand from Microsoft Intune/MDM tools or when a recovery password is used to unlock the BitLocker protected drive. This feature will help prevent accidental recovery password disclosure as part of manual BitLocker drive unlock by users.

Transport Layer Security (TLS)

An experimental implementation of TLS 1.3 is included in Windows 10, version 1909. TLS 1.3 disabled by default system wide. If you enable TLS 1.3 on a device for testing, then it can also be enabled in Internet Explorer 11.0 and Microsoft Edge by using Internet Options. For beta versions of Microsoft Edge on Chromium, TLS 1.3 is not built on the Windows TLS stack, and is instead configured independently, using the Edge://flags dialog. Also see Microsoft Edge platform status.

Virtualization

Windows Sandbox

Windows Sandbox is an isolated desktop environment where you can install software without the fear of lasting impact to your device. This feature is available in Windows 10, version 1903. In Windows 10, version 1909 you have even more control over the level of isolation.

Windows Virtual Desktop

Windows Virtual Desktop (WVD) is now generally available globally!

Windows Virtual Desktop is a comprehensive desktop and app virtualization service running in the cloud. It’s the only virtual desktop infrastructure (VDI) that delivers simplified management, multi-session Windows 10, optimizations for Microsoft 365 Apps for enterprise, and support for Remote Desktop Services (RDS) environments. Deploy and scale your Windows desktops and apps on Azure in minutes, and get built-in security and compliance features. Windows Virtual Desktop requires a Microsoft E3 or E5 license, or a Microsoft 365 E3 or E5 license, as well as an Azure tenant.

Deployment

Microsoft Endpoint Manager

Configuration Manager, Intune, Desktop Analytics, Co-Management, and Device Management Admin Console are now Microsoft Endpoint Manager. See the Nov. 4 2019 announcement. Also see Modern management and security principles driving our Microsoft Endpoint Manager vision.

Windows 10 Pro and Enterprise in S mode

You can now deploy and run traditional Win32 (desktop) apps without leaving the security of S mode by configuring the Windows 10 in S mode policy to support Win32 apps, and deploy them with Mobile Device Management (MDM) software such as Microsoft Intune. For more information, see Allow Line-of-Business Win32 Apps on Intune-Managed S Mode Devices.

SetupDiag

SetupDiag version 1.6.0.42 is available.

SetupDiag is a command-line tool that can help diagnose why a Windows 10 update failed. SetupDiag works by searching Windows Setup log files. When searching log files, SetupDiag uses a set of rules to match known issues. In the current version of SetupDiag there are 53 rules contained in the rules.xml file, which is extracted when SetupDiag is run. The rules.xml file will be updated as new versions of SetupDiag are made available. .

Windows Assessment and Deployment Toolkit (ADK)

A new Windows ADK will not be released for Windows 10, version 1909. You can use the Windows ADK for Windows 10, version 1903 to deploy Windows 10, version 1909.

Desktop Analytics

Desktop Analytics is now generally available globally! Desktop Analytics is a cloud-connected service, integrated with Configuration Manager, which gives you data-driven insights to the management of your Windows endpoints. It provides insight and intelligence that you can use to make more informed decisions about the update readiness of your Windows endpoints. Desktop Analytics requires a Windows E3 or E5 license, or a Microsoft 365 E3 or E5 license.

Microsoft Connected Cache

Together with Delivery Optimization, Microsoft Connected Cache installed on Windows Server or Linux can seamlessly offload your traffic to local sources, caching content efficiently at the byte range level. Connected Cache is configured as a “configure once and forget it” solution that transparently caches content that your devices on your network need.

Accessibility

This release adds the ability for Narrator and other assistive technologies to read and learn where the FN key is located on keyboards and what state it is in (locked versus unlocked).

Processor requirements and enhancements

Requirements

Windows Processor Requirements have been updated for this version of Windows.

Favored CPU Core Optimization

This version of Windows 10 will include optimizations to how instructions are processed by the CPU in order to increase the performance and reliability of the operating system and its applications.

When a CPU is manufactured, not all of the cores are created equal. Some of the cores may have slightly different voltage and power characteristics that could allow them to get a «boost» in performance. These cores are called «favored cores» as they can offer better performance than the other cores on the die.

With Intel Turbo Boost Max Technology 3.0, an operating system will use information stored in the CPU to identify which cores are the fastest and then push more of the CPU intensive tasks to those cores. According to Intel, this technology «delivers more than 15% better single-threaded performance».

Debugging

Additional debugging capabilities for newer Intel processors have been added in this release. This is only relevant for hardware manufacturers.

Efficiency

General battery life and power efficiency improvements for PCs with certain processors have been added in this release.