- Microsoft releases update KB5011543 for Windows 10 21H2.
- The update bumps the version number to build 19044.1620.
- The update KB5011543 prepares Windows 10 for upcoming search highlights.
- This release also brings a lot of improvements and fixes.
- Initially released in Release Preview as build 19044.1618, now available as build 19044.1620 in the stable channel.
Microsoft is now rolling out the Windows 10 build 19044.1620 (KB5011543) as an optional install in the stable channel. This is a meaningful update with new features, improvements, and fixes that the company plans to eventually roll out in the stable for version 21H2.
Update KB5011543 for Windows 10 bumps the version number to build 19044.1620, and according to the official changelogs (Release Preview Channel announcement), it introduces an updated version of the Windows Search experience that highlights moments in time. It also includes a new option for changing the color of toast notifications, adds a new policy to improve notification management, and brings several new fixes.
Update KB5011543 fixes and changes for Windows 10
These are the fixes and improvements available with the latest update preview of Windows 10:
Search highlights
Building 19044.1620 prepares the system for the new search highlights features coming to the Windows Search experience in the coming months.
Microsoft explains that the search box in the Start menu and the Search icon in the Taskbar will periodically update with content, including fun illustrations, that help you discover more, be connected, and stay productive. The new feature will also show notable moments, such as holidays, anniversaries, and other educational moments in time both globally and in your region.
Furthermore, search highlights will offer “additional content in search home related to today’s moment and daily content like word of the day, Microsoft Rewards offers trending searches, and more.”
On the left pane, you will also find a list of your recently launched apps, files, settings, and websites to help you get back to what you were doing in the past. In addition, if you use a work or school account, you will also be able to use Microsoft Search in the organization.
Notification system
In this release, Windows 10 21H2 is getting a new option to change the color of toast buttons to identify success and critical scenarios more easily for apps that send notifications using the system notifications.
Also, you will find a new policy that expands an app’s top three notifications by default in the Action Center for apps that send notifications using the system notifications on Windows 10. This feature displays multiple notifications that you can interact with simultaneously.
Fixes and improvements
These are the fixes and improvements that Windows 10 is getting with the update KB5011543:
- Fixed an issue that causes searchindexer.exe to stop responding during a dismount operation in the Remote Desktop setup environment.
- Fixed an issue that affects searchindexer.exe and prevents Microsoft Outlook’s offline search from returning recent emails.
- Fixed an issue that might deactivate Windows when you change the National Language Support (NLS) version from 6.3 to 6.2.
- Fixed an issue in which modern browsers fail to correctly render HTML that is generated by
gpresult/h.- Fixed an issue that causes an “Access denied” exception for a file during a PowerShell test for AppLocker.
- Fixed an issue that might cause the Group Policy Service to stop processing telemetry information for Group Policy Registry Preferences.
- Fixed an issue that might prevent a DNS Server query resolution policy from working as expected when you specify a fully qualified domain name (FQDN) and subnet conditions.
- Fixed a heap leak in PacRequestorEnforcement that degrades the performance of a domain controller.
- Fixed an issue that affects the Key Distribution Center (KDC) Proxy. The KDC Proxy cannot properly obtain Kerberos tickets for signing in to Key Trust Windows Hello for Business.
- We added support for Microsoft Account (MSA) Pass-through scenarios in Azure Active Directory (AAD) Web Account Manager (WAM).
- Fixed an issue that logs Event ID 37 during certain password change scenarios, including failover cluster name object (CNO) or virtual computer object (VCO) password changes.
- Fixed an issue that might unintentionally add a Trusted Platform Module (TPM) protector when you use the Silent BitLocker enablement policy.
- Fixed an issue that prevents the User Account Control (UAC) dialog from correctly showing the application that is requesting elevated privileges.
- Fixed an issue that causes the Move-ADObject command to fail when you move computer accounts across domains. The error message is, “Multiple values were specified for an attribute that can have only one value”.
- Fixed an issue that prevents Event 4739 from displaying the new values of certain attributes after a policy change.
- Fixed an issue that prevents Android device users from signing in to some Microsoft applications, such as Microsoft Outlook or Microsoft Teams. This issue occurs after rolling over token signing and decrypting certificates, resetting a user’s password, or when an administrator has revoked refresh tokens.
- Fixed an issue that might cause domain joining to fail in environments that use disjoint DNS hostnames.
- Fixed an issue that prevents the Back button of the credentials window, where you sign in, from being visible in high contrast black mode.
- Fixed an issue that prevents you from accessing Server Message Block (SMB) shares using an IP Address when SMB hardening is enabled.
- Fixed an issue that occurs when the Best Practices Analyzer (BPA) values for SMB have not been updated for more recent platforms.
- Fixed an issue that causes stop error 0x1E in the SMB Server (srv2.sys).
- Fixed an issue that causes a mismatch between NetBIOS and DNS Active Directory domain names when you create a cluster.
- Fixed an issue that causes the Network File System (NFS) redirector to stop working (error 0x50) when you convert a text file to a PDF.
Update for older versions of Windows 10
In addition, Windows 11 version 1809 gets the update preview KB5011551 that brings the version number to build 17763.2746 and brings a bunch of fixes.
Download update KB5011543 for Windows 10
The update is available immediately and it will download and install automatically through the Release Preview Channel. However, you can always force the update from Settings > Update & Security > Windows Update, click the Check for updates button, and use the option to install the optional update.
Update March 22, 2022: Microsoft initially released the update KB5011543 as build 19044.1618 in the Release Preview Channel on March 14. On March 22, the company is making available the same update as build 19044.1620 in the stable channel as an optional update.
Mauro Huculak is a Windows How-To Expert who started Pureinfotech in 2010 as an independent online publication. He has also been a Windows Central contributor for nearly a decade. Mauro has over 15 years of experience writing comprehensive guides and creating professional videos about Windows and software, including Android and Linux. Before becoming a technology writer, he was an IT administrator for seven years. In total, Mauro has over 21 years of combined experience in technology. Throughout his career, he achieved different professional certifications from Microsoft (MSCA), Cisco (CCNP), VMware (VCP), and CompTIA (A+ and Network+), and he has been recognized as a Microsoft MVP for many years. You can follow him on X (Twitter), YouTube, LinkedIn and About.me. Email him at [email protected].