June 26, 2018—KB4284848 (OS Build 17134.137)

Improvements and fixes

This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:

• Addresses an issue that causes the Video Settings HDR streaming calibration slider to stop working. This is caused by a conflict with the panel brightness intensity settings configured by certain OEMs.

• Addresses streaming compatibility issues with certain live TV streaming content providers.

• Addresses an issue where media content previously generated by Media Center doesn't play after installing the Windows 10 April 2018 update.

• Addresses an issue in which SmartHeap didn't work with UCRT.

• Addresses performance regression in App-V, which slows many actions in Windows 10.

• Addresses an issue that causes Appmonitor to stop working at logoff if the Settingstoragepath is set incorrectly.

• Addresses an issue that causes Appmonitor to stop working at logoff, and user settings are not saved.

• Addresses an issue where client applications running in a container image don't conform to the dynamic port range.

• Addresses an issue where the DNS server might stop working when using DNS Query Resolution Policies with a "Not Equal" (NE) condition.

• Addresses an issue with T1 and T2 custom values after configuring DHCP failover.

• Addresses an issue that causes the latest versions of Google Chrome (67.0.3396.79+) to stop working on some devices.

• Addresses issues with the Remote Desktop client in which pop-up windows and drop-down menus don't appear and right-clicking doesn't work properly. These issues occur when using remote applications.

• Addresses an issue that causes a connection failure when a Remote Desktop connection doesn’t read the bypass list for a proxy that has multiple entries.

• Addresses an issue that may cause Microsoft Edge to stop working when it initializes the download of a font from a malformed (not RFC compliant) URL.

• Addresses an issue where some users may receive an error when accessing files or running programs from a shared folder using the SMBv1 protocol. The error is "An invalid argument was supplied".

• Addresses an issue that causes Task Scheduler tasks configured with an S4U logon to fail with the error "ERROR_NO_SUCH_LOGON_SESSION/STATUS_NO_TRUST_SAM_ACCOUNT".

• Addresses a performance issue with Windows Mixed Reality on some laptops with hybrid graphics adapters, such as Surface Book 2.

• Addresses an issue that blocks Folder Redirection for AppData\Roaming. The Event 502 message, “The folder is not redirectable.” appears.

• Addresses an issue in which Wi-Fi credentials must be entered each time a device restarts and tries to reconnect to Wi-Fi using Group Policy-distributed Preferred Network Profiles.

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

Known issues in this update

How to get this update

To download and install this update, go to Settings > Update & Security > Windows Update and select Check for updates.

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Important When installing both the servicing stack update (SSU) KB4338853 and the latest cumulative update (LCU) from the Microsoft Update Catalog, install the SSU before installing the LCU. 

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4284848.