Windows 10 949 Published by

Microsoft has released the following two previews: KB5001384 (OS Build 17763.1911) and KB5001396 (OS Build 18363.1533).



April 22, 2021-KB5001384 (OS Build 17763.1911) Preview

Highlights

  • Updates an issue that resets the speaker configuration when you cancel the speaker configuration wizard.

  • Updates an issue that prevents you from turning on the flashlight utility when the Camera application is in use.

Improvements and fixes

This non-security update includes quality improvements. Key changes include:

  • Removes the Microsoft Edge Legacy desktop application that is out of support and installs the new Microsoft Edge. For more information, see New Microsoft Edge to replace Microsoft Edge Legacy with April’s Windows 10 Update Tuesday release.

  • Addresses an issue that fails to remove mandatory profiles completely when you sign out when using the “Delete cached copies of roaming profiles” Group Policy.

  • Addresses an issue with window activation that occurs when an owned window is removed.

  • Addresses an issue with evaluating the compatibility status of the Windows ecosystem to help ensure application and device compatibility for all updates to Windows.

  • Addresses an issue with a race condition between Task Scheduler and the Workstation Service. As a result, users cannot automatically join a hybrid Azure Active Directory (AAD) domain and error 0x80070490 is generated.

  • Addresses an issue with a partial Service Connection Point (SCP) configuration that causes dsregcmd.exe to stop working. This issue occurs because of a case-sensitive domain ID name comparison that occurs when joining a hybrid Azure Active Directory domain using single sign-on (SSO).

  • Addresses an issue that accidently triggers hybrid AAD joining when the Group Policy “Register domain-joined computers as devices” is set to DISABLED. For more information, see Post configuration tasks for Hybrid Azure AD join

  • Addresses an issue that causes lsass.exe memory usage to grow until the system becomes unusable. This occurs when Transport Layer Security (TLS) resumes a session.

  • Addresses an issue that includes kernel mode rules for .NET applications in Windows Defender Application Control policies. As a result, the generated policies are significantly larger than necessary.

  • Addresses an issue that causes Azure Active Directory (AAD) Work Accounts to unexpectedly disappear from certain apps such Microsoft Teams or Microsoft Office.

  • Addresses an issue that might generate a stop error when Docker containers run with process isolation.

  • Addresses an issue that causes automatic enrollment and certificate retrieval to fail with the error, “The parameter is incorrect.”

  • Addresses an issue in Task Scheduler that causes monthly tasks and tasks scheduled for 0:00 UTC to occur at the wrong time.

  • Addresses an issue with Windows Virtual Desktop sessions. A blank list of output devices appears in the Windows Sound Settings app when you plug in a new audio device during a session.

  • Addresses an issue that resets the speaker configuration when you cancel the speaker configuration wizard.

  • Addresses an issue that prevents you from turning on the flashlight utility when the Camera application is in use.

  • Addresses an issue that might prevent an application screen from working when using a Remote Desktop ActiveX control that is embedded in an HTML page.

  • Addresses an issue that fails to apply the “false” setting for the RequirePDC flag in Active Directory Federation Services (ADFS).

  • Improves the Windows Server Storage Migration Service by:

    • Adding support for migration from NetApp FAS arrays to Windows Servers and clusters.

    • Resolving multiple issues and improving reliability.

      For more information, see Storage Migration Service overview.

If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device. 

Win10

April 22, 2021-KB5001384 (OS Build 17763.1911) Preview

April 22, 2021—KB5001396 (OS Build 18363.1533) Preview

Highlights

  • Introducing news and interests on the Windows 10 taskbar

    With news and interests on the Windows taskbar, you get quick access to an integrated feed of dynamic content, such as news, weather, sports, and more, that updates throughout the day. You can personalize your feed with relevant content tailored for you. In the coming weeks, you will be able to seamlessly peek into your feed directly from the taskbar throughout your day without disrupting your workflow. For more information, see Personalized content at a glance: Introducing news and interests on the Windows 10 taskbar.

  • Updates an issue that causes blank tiles to appear on the Start menu with names such as “ms-resource:AppName” or "ms-resource:appDisplayName".

  • Adds the ability to adjust the amount of idle time before a headset goes to sleep in the Settings app for Windows Mixed Reality. 

  • Updates an issue that generates a stop error when you delete a file or folder from locations that sync with Microsoft OneDrive. 

Improvements and fixes

This non-security update includes quality improvements. Key changes include:

  • Addresses an issue that prevents a site from transitioning out of Microsoft Edge IE Mode when expected.

  • Addresses an issue that fails to remove mandatory profiles completely when you sign out when using the “Delete cached copies of roaming profiles” Group Policy.

  • Addresses an issue that causes blank tiles to appear on the Start menu with names such as “ms-resource:AppName” or "ms-resource:appDisplayName". These blank tiles represent the installed applications and appear for approximately 15 minutes after updating to a newer version of Windows 10. Installing this update prevents these blank tiles from appearing on the Start menu.

  • Addresses an issue with window activation that occurs when an owned window is removed.

  • Addresses an issue with searching after you select File > Open in a 32-bit application. When you click in the search box, the application stops working.

  • Addresses an issue with evaluating the compatibility status of the Windows ecosystem to help ensure application and device compatibility for all updates to Windows.

  • Addresses an issue that includes kernel mode rules for .NET applications in Windows Defender Application Control policies. As a result, the generated policies are significantly larger than necessary.

  • Addresses an issue that causes devices to fail Device Health Attestation.

  • Addresses an issue that causes lsass.exe memory usage to grow until the system becomes unusable. This occurs when Transport Layer Security (TLS) resumes a session.

  • Addresses an issue with a race condition between Task Scheduler and the Workstation Service. As a result, users cannot automatically join a hybrid Azure Active Directory (AAD) domain and error 0x80070490 is generated.

  • Addresses an issue that turns off S Mode when you enable System Guard Secure Launch on a system running Windows 10 in S Mode.

  • Addresses an issue that causes Azure Active Directory (AAD) Work Accounts to unexpectedly disappear from certain apps such Microsoft Teams or Microsoft Office.

  • Addresses an issue that accidently triggers hybrid AAD joining when the Group Policy “Register domain-joined computers as devices” is set to DISABLED. For more information, see Post configuration tasks for Hybrid Azure AD join.

  • Addresses an issue with a partial Service Connection Point (SCP) configuration that causes dsregcmd.exe to stop working. This issue occurs because of a case-sensitive domain ID name comparison that occurs when joining a hybrid Azure Active Directory domain using single sign-on (SSO).

  • Adds the ability to adjust the amount of idle time before a headset goes to sleep in the Settings app for Windows Mixed Reality.

  • Addresses an issue that might generate a stop error when Docker containers run with process isolation.

  • Addresses an issue that causes automatic enrollment and certificate retrieval to fail with the error, “The parameter is incorrect.”

  • Addresses an issue that generates a stop error when you delete a file or folder from locations that sync with Microsoft OneDrive.

  • Addresses an issue with a deadlock in the New Technology File System (NTFS).

  • Improves the Windows Server Storage Migration Service by:

    • Adding support for migration from NetApp FAS arrays to Windows Servers and clusters.

    • Resolving multiple issues and improving reliability.

        For more information, see Storage Migration Service overview.

If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.  

April 22, 2021—KB5001396 (OS Build 18363.1533) Preview