Windows 10 KB5051974 update force installs new Microsoft Outlook app

Microsoft has released the KB5051974 cumulative update for Windows 10 22H2 and Windows 10 21H2, which automatically installs the new Outlook for Windows app and fixes a memory leak bug.

The Windows 10 KB5051974 update is mandatory as it contains Microsoft’s January 2025 Patch Tuesday security updates.

Windows users can install this update by going into Settings, clicking on Windows Update, and manually performing a ‘Check for Updates.’

However, as this update is mandatory, it will automatically start installing in Windows once you check for updates. To make this more manageable, you can schedule a time when your computer is restarted to finish the installation.

After installing this update, Windows 10 22H2 will be updated to build 19045.5487 and Windows 10 21H2 will be build 19044.5487.

Windows 10 users can also manually download and install the KB5051974 update from the Microsoft Update Catalog.

What’s new in Windows 10 KB5051974

The KB5051974 update includes fixes for numerous bugs in Windows 10, including one that prevented Capture Service and Snipping Tool from responding and a memory leak bug.

This update includes a total of eleven fixes or changes, with the highlighted ones listed below:

• [Mail] New! You now have the new Outlook for Windows app. A new app icon appears in the Apps section on the Start menu, near classic Outlook. There are no changes to any settings or defaults. If you are an IT admin, learn how to manage this update at Control the installation and use of new Outlook.
• [Screen capture] Fixed: The Capture Service and Snipping Tool stop responding. This occurs when you press the Windows logo key+Shift+S several times while the Narrator is on.
• [Chinese Pinyin input method editor (IME)] Bing will stop giving automatic suggestions in the search box for search engine sites like Baidu. To get manual suggestions, use Ctrl+Tab or the chevron button (>). 
• [Digital/Analog converter (DAC) (known issue)] Fixed: You might experience issues with USB audio devices. This is more likely when you use a DAC audio driver based on USB 1.0. USB audio devices might stop working, which stops playback.
• [USB audio device drivers] Fixed: The code 10 error message, « This device cannot start, » appears. This occurs when you connect to certain external audio management devices.
• [USB cameras] Fixed: Your device does not recognize the camera is on. This issue occurs after you install the January 2025 security update.
• [Virtual memory] Fixed: An issue depletes virtual memory, which might cause some apps to fail.

Microsoft says that there are three known issues, all of which were introduced in previous updates.

After installing the update, OpenSSH connections on Windows may no longer work as the SSHD service fails to start automatically. This can be fixed by manually starting the SSHD service.

« Following the installation of the October 2024 security update, some customers report that the OpenSSH (Open Secure Shell) service fails to start, preventing SSH connections. The service fails with no detailed logging, and manual intervention is required to run the sshd.exe process, » explains Microsoft.

Microsoft also says that the January 2025 and later Windows updates may fail if Citrix Session Recording Agent (SRA) version 2411 is installed on the device.

« As a workaround, stop the Session Recording Monitoring service, install the Microsoft security update, and enable the Session Recording Monitoring service, » explains a Citrix support bulletin.

Devices with certain Citrix components installed might be unable to complete the January 2025 Windows security update installation. This issue was observed on devices with Citrix Session Recording Agent (SRA) version 2411. The 2411 version of this application was released in December 2024.

Finally, the Windows EventViewer may incorrectly display an Event 7023 error about SgrmBroker.exe, stating, « The System Guard Runtime Monitor Broker service terminated with the following error: %%3489660935. » 

Microsoft says that SgrmBroker.exe currently serves no purpose and that this error does not impact any functionality on the device and will be fixed in future updates.

A complete list of fixes can be found in the KB5051974 support bulletin and last month’s KB5050081 preview update bulletin.