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Microsoft has released the optional cumulative update KB5005611 Preview for Windows 10 2004, Windows 10 20H2, and Windows 10 21H1. This update fixes bugs in Microsoft Outlook and helps mitigate the PrintNightmare vulnerability.
This cumulative update is part of Microsoft’s September 2021 monthly “C” update, allowing Windows users to test upcoming fixes before they are automatically rolled out in the next October 2021 Patch Tuesday. .
Unlike the Patch Tuesday cumulative updates, the “C†preview updates are optional and do not include any security updates.
Windows users can install this update by going to Settings, clicking on Windows Update, and select ‘Check for updates. ‘
As this is an optional update, you will be asked if you want to install it by clicking on the “Download and Install” link as shown in the image below.
Windows 10 users can also manually download and install the KB5005611 preview update from the Microsoft Update Catalog.
Microsoft Outlook Hotfixes and News and Interests
In Windows 10 preview update KB5005611, Microsoft introduced many fixes for Microsoft Outlook and News and Interests that people have encountered since previous updates.
For Microsoft Outlook, this update fixes a bug that causes the application to stop suddenly or an add-in to prevent you from composing replies to emails.
For News and Interests, this update fixes blurry icons and app display when you right-click on the taskbar, even if you’ve turned the feature off.
Mitigating vulnerabilities in PrintNightmare is now easier
In July, Microsoft added a new group policy to require that drivers be installed by administrators only. Microsoft did this to fix a remote code execution vulnerability known as PrintNightmare.
In August, Microsoft turned on this default setting, causing a number of printing issues for corporate users.
Although this setting was added as Group Policy, it could only be enabled or disabled by manually editing the Windows registry. Microsoft did this by adding the Restrict driver installation to administrators value under HKLM Software Policies Microsoft Windows NT Printers PointAndPrint key.
Microsoft introduced Group Policy that makes it easier for you to manage this setting with today’s update. This new policy is named “Restrict printer driver installation to administrators“and can be found under Computer configuration > Administrative Templates > Printers.
Microsoft has also changed the following Group Policy settings to configure period (.) Delimited IP addresses for trusted print servers:
What’s new in Windows 10 KB5005611
After installing this update, Windows 10 2004 will be updated to create 19041.1266, Windows 10 20H2 will be updated to create 19042.1266, and Windows 10 21H1 will be updated to create 19043.1266.
Windows 10 Cumulative Update Preview KB5005611 includes thirty-eight improvements or fixes, the highlighted ones are listed below:
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Updates an issue that causes a one-hour system clock error after a daylight saving time change (DST).
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Updates an issue that causes applications, such as Microsoft Outlook, to stop suddenly during normal use.
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Updates an issue with the Microsoft Outlook add-in that prevents you from typing a response.
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Updates an issue that causes News and Interest icons to appear blurry when using certain screen resolutions.
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Updates an issue that causes News and interests appear when you right-click on the taskbar, even if you have disabled this feature on your device.
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Updates an issue that may be causing distortion in the sound recorded by Cortana and other voice assistants.
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Updates an issue that prevents your device from working after you restart it.
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Updates an issue that prevents you from providing input to apps when the taskbar is not at the bottom of the screen.
A full list of fixes can be found in the Support Bulletin KB5005611.
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