June 18, 2019—KB4503281 (OS Build 16299.1237)

Improvements and fixes

This update includes quality improvements. Key changes include:

• Addresses an issue that prevents the operating system from loading new icon files if it encounters an icon file that has a bad format.

• Addresses an issue that prevents Microsoft Edge from opening properly in certain scenarios when you select a link within an application.

• Addresses an issue that prevents the Calculator application from following the Gannen setting when it is enabled. For more information, see KB4469068.

• Addresses an issue that doesn’t detect when you hover over a 3D animation that is flipping in Internet Explorer 11 and other applications that use direct composition.

• Addresses an issue that may cause the UI to stop responding for several seconds when scrolling in windows that have many child windows.

• Addresses an issue that allows users to disable the sign-in background image when the "Computer\Administrative Templates\Control Panel\Personalization\Prevent changing lock screen and logon image" policy is enabled.

• 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 fails to update a user hive when you publish an optional package in a Connection Group after the Connection Group was previously published.

• Adds support for a customer configurable safe list for ActiveX controls when using Windows Defender Application Control. For more information, see Allow COM object registration in a Windows Defender Application Control policy.

• Addresses an issue with using Data Protection Application Programming Interface NG (DPAPI-NG) or a group-protected Personal Information Exchange Format (PFX) file. Data you protected using one of these mechanisms on Windows 10, version 1607 and Windows Server 2016 or earlier cannot be decrypted using Windows 10, version 1703 or later.

• Addresses an issue that prevents a user from signing in to a Microsoft Surface Hub device with an Azure Active Directory account. This issue occurs because a previous session did not end successfully.

• Addresses an issue that may prevent Windows Information Protection (WIP) from enforcing encryption on a removable USB drive.

• Addresses an issue that causes Windows Account Manager (WAM) to fail when using a Trusted Platform Module (TPM) and prevents the user from authenticating.

• Addresses an issue that causes Disk Management and DiskPart to stop responding when presenting some removable disks to Windows.

• Addresses an issue that causes Office 365 applications to stop working after opening when they are deployed as App-V packages.

• Disables Microsoft Visual Basic Script (VBScript) by default in the Internet and Restricted sites zones in Internet Explorer and the WebBrowser control.

• Addresses an issue with programmatic scrolling in Internet Explorer 11.

• Addresses an issue that may display the error, “MMC has detected an error in a snap-in and will unload it.” when you try to expand, view, or create Custom Views in Event Viewer. Additionally, the application may stop responding or close. You may also receive the same error when using Filter Current Log in the Action menu with built-in views or logs.

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

Known issues in this update

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 and applying Microsoft security fixes. For more information, see Servicing stack updates.

If you are using Windows Update, the latest SSU (KB4500641) 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

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.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4503281.