Improvements and fixes

This update focuses on improving quality and does not introduce any new features for the operating system. The main changes are as follows:

• Fixes a problem where Microsoft Edge may stop working with certain display drivers.
• Resolves difficulties for third-party applications when authenticating hotspots.
• Addresses an issue with the promotion of non-root domains failing in Active Directory forests when optional features like Active Directory Recycle are enabled.
• Resolves a date format issue in the Japanese era calendar (KB4469068).
• Fixes a compatibility issue with AMD R600 and R700 display chipsets.
• Addresses audio compatibility issues when playing newer games with 3D Spatial Audio or Windows Sonic for Headphones through multichannel audio devices.
• Resolves a problem where audio playback may stop during Seek operations (e.g., rewind) with FLAC audio content.
• Fixes an issue where users can uninstall apps from the Start menu even when the “Prevent users from uninstalling applications from Start menu” policy is set.
• Resolves a problem that causes File Explorer to stop working when clicking the “Turn On” button for the timeline feature with the “Allow upload of user activities” policy disabled.
• Addresses an issue preventing users from installing Local Experience Packs from the Microsoft Store when the language is already set as the active display language.
• Fixes an issue where certain symbols appear as squares in a text control.
• Resolves a two-way audio issue with some Bluetooth headsets during phone calls.
• Fixes a problem that may turn off TCP Fast Open by default on some systems.
• Addresses an issue where applications lose IPv4 connectivity when IPv6 is unbound.
• Fixes an issue on Windows Server 2019 that breaks connectivity on guest VMs when applications inject the low-resource flag on packets.
• Resolves an issue when creating a page file on a drive with FILE_PORTABLE_DEVICE characteristics, resulting in a temporary warning message.
• Fixes an issue with Remote Desktop Services where the system stops accepting connections after several connections are made.
• Addresses a problem in Windows Server 2019 where a Hyper-V VM remains at the bootloader screen for OS selection when Virtual Machine Connection (VMConnect) is attached.
• Resolves a rendering issue with end-user-defined characters (EUDC) in Microsoft Edge.
• Updates the Ltotape.sys driver to add support for Linear Tape-Open 8 (LTO-8) tape drives.
• Fixes an issue that causes SYSPREP to fail with the error, “Sysprep was not able to validate your Windows installation…” when running SYSPREP after an in-place upgrade to Windows 10 version 1809 and the removal of the Windows.old folder using Disk Cleanup (cleanmgr.exe) or Storage Sense.
• Resolves an issue that causes virtual machine (VM) creation to fail when Node Interleaving is enabled.
• Fixes an issue that prevents users from enabling Storage Maintenance Mode on timeout if the storage is under load.
• Addresses an issue that prevents screen readers from reading screen text properly.
• Resolves an issue where the clock and calendar flyout ignore user settings for Japanese Era date and time formats (KB4469068).
• Fixes an issue that can overwrite gan-nen support behavior for the Japanese Era with a newer update (KB4469068).
• Addresses an issue where the first character is not recognized as the abbreviation for the Japanese Era name (KB4469068).
• Resolves an issue that causes the incorrect Japanese Era name to be displayed in Microsoft Office Visual Basic for Applications (KB4469068).

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

Known Issues in this Update

Symptom	Workaround
Applications that rely on a Microsoft Jet database using the Microsoft Access 97 file format may encounter issues if the database contains column names longer than 32 characters. In such cases, the database will not open and will display the error message: “Unrecognized Database Format.”	To resolve the issue, you can choose one of the following options: Option 1: Modify the database to ensure that all column names are 32 characters or less. This will ensure compatibility without needing to convert the database format. Option 2: Convert the database to the .accdb file format. After the conversion, you will need to update the connection string to reflect the new file format. The simplest method for conversion is to use Microsoft Access 2010 or earlier versions. These versions provide an easy way to convert older databases to the .accdb format.
After installing KB4480967, some users have reported issues when trying to load a webpage in Microsoft Edge using a local IP address. In such cases, browsing may fail entirely, or the webpage may become unresponsive.	To fix the issue with Microsoft Edge failing to load webpages using a local IP address after installing KB4480967, follow these steps: Open the Control Panel and go to Internet Options. Navigate to the Security tab and select the Trusted Sites icon. Click the Sites button. Uncheck the box for Require server verification (https:) for all sites in this zone. In the Add this website to the zone field, enter the local IP address that failed to load (e.g., http://192.168.0.1). Click the Add button. Recheck the box for Require server verification (https:) for all sites in this zone. Click Close and then click OK. Restart Microsoft Edge. Microsoft is actively working on a resolution and will provide an update in an upcoming release.