March 17, 2020—KB4541333 (OS Build 17134.1399)

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Release Date:

Mar 17, 2020

Version:

OS Build 17134.1399

Windows 10, version 1803 (the April 2018 Update) Home and Pro editions have reached end of service. For Windows 10 devices that are at, or within several months of reaching end of service, Windows Update will automatically initiate a feature update (with users having the ability to choose a convenient time). This keeps those devices supported and receiving the monthly updates that are critical to device security and ecosystem health.

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Highlights

Updates an issue that causes an error when printing to a document share.
Updates an issue that causes a stop error when Windows resumes from Sleep and turns on certain Bluetooth headsets.
Improves application and device compatibility with Windows updates.

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Improvements and fixes

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

Addresses an issue that causes an error when printing to a document repository.
Addresses an issue that causes a KERNEL_SECURITY_CHECK_FAILURE (139) stop error when Windows resumes from Sleep and turns on certain Bluetooth headsets.
Addresses an issue that might cause a delay of up to two minutes when signing in or unlocking a session on Hybrid Azure Active Directory-joined machines.
Addresses an issue that causes authentication in an Azure Active Directory environment to fail and no error appears.
Addresses an issue that prevents machines that have enabled Credential Guard from joining a domain. The error message is "The server's clock is not synchronized with the primary domain controller's clock."
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 prevents Microsoft User Experience Virtualization (UE-V) settings from roaming to enable the signature files that are used for new messages, forwarded messages, and replies.
Addresses an issue that prevents some machines from automatically going into Sleep mode under certain circumstances because of Microsoft Defender Advanced Threat Protection (ATP) Auto Incident Response (IR).
Addresses an issue that prevents some machines from running Microsoft Defender ATP Threat & Vulnerability Management successfully.
Improves support for non-ASCII file paths for Microsoft Defender ATP Auto IR.

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

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Known issues in this update

Symptom	Workaround
Devices using a manual or auto-configured proxy, especially with a virtual private network (VPN), might show limited or no internet connection status in the Network Connectivity Status Indicator (NCSI) in the notification area. This might happen when connected to or disconnected from a VPN or after changing the state between the two. Devices with this issue might also have issues reaching the internet using applications that use WinHTTP or WinInet. Examples of apps that might be affected on devices in this state include, but are not limited to, Microsoft Teams, Microsoft Office, Microsoft Office 365, Microsoft Outlook, Internet Explorer 11, and some versions of Microsoft Edge.	This issue is resolved in KB4554349.
Devices on a domain might be unable to install apps published using a Group Policy Object (GPO). This issue only affects app installations that use .msi files. It does not affect any other installation methods, such as from the Microsoft Store.	This issue is resolved in KB4550944.

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How to get this update

Before installing this update

Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.

If you are using Windows Update, the latest SSU (KB4540724) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.

Install this update

Release Channel	Available	Next Step
Windows Update or Microsoft Update	Yes	Go to Settings > Update & Security > Windows Update. In the Optional updates available area, you’ll find the link to download and install the update.
Microsoft Update Catalog	Yes	To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)	No	You can import this update into WSUS manually. See the Microsoft Update Catalog for instructions.