Windows 10 Update: Improvements, Fixes, and Known Issues

Improvements and Fixes

This update introduces significant quality improvements across multiple areas of Windows 10. Below are the key changes and enhancements:

Audio and Multimedia Enhancements:

• Resolved an issue affecting devices with multiple audio outputs where applications like Windows Media Player, Realtek HD Audio Manager, and Sound Blaster Control Panel would stop working unexpectedly if users selected a non-default audio output device.

• Improved Game Mode functionality, ensuring that top streaming and recording software experiences remain unaffected.

Windows 10 Virtual Desktop Enhancements:

• Enabled insider builds activation for Windows 10 Enterprise for Virtual Desktops in Microsoft Azure, the only tested and supported platform for hosting Windows 10 Enterprise for Virtual Desktops.

Browsing and UI Fixes:

• Fixed an issue causing loss of Favorites and Reading List in Microsoft Edge after an OS update.

• Addressed a random crash issue in Internet Explorer while browsing.

• Resolved an ActiveX scrolling issue in Internet Explorer 11 during user-triggered scroll operations.

• Fixed an issue preventing the OS from loading new icon files when encountering a badly formatted icon file.

Time Zone and Date Format Updates:

• Updated time zone information for São Tomé and Príncipe, Kazakhstan, and Buenos Aires, Argentina.

• Resolved issues with Japanese era date formatting and ensured the correct Japanese era name appears in Microsoft Office VBA.

Security and Network Enhancements:

• Fixed a security issue preventing authentication credential prompts when an enterprise web server tries to connect to the internet.

• Addressed an issue where network interfaces without a default gateway prevented applications from connecting to destination endpoints, affecting DSL modems and PPPoE dial-up connections.

• Fixed an issue where Windows reuses an expired DHCP lease if the lease expired while the OS was shut down.

• Introduced a new Group Policy setting: “Enable Windows to soft-disconnect a computer from a network,” allowing administrators to control how Windows disconnects from a network.

Smart Card, VPN, and Firewall Improvements:

• Resolved an issue preventing virtual smart cards from starting when used with Citrix 7.15.2000 Workstation VDA software.

• Fixed Always-On VPN exclusion routes that were not working for link-local exclusions.

• Addressed an issue where certificate renewal failed when using CERT_RENEWAL_PROP_ID.

• Fixed Windows firewall performance degradation caused by excessive firewall rules, leading to server slowdowns.

Additional Bug Fixes and Enhancements:

• Addressed an issue where single-use applications (kiosk scenarios) would have muted sound after resuming from sleep.

• Fixed an issue preventing USB cameras from registering correctly with Windows Hello after out-of-box experience (OOBE) setup.

• Improved the reliability of the Windows ecosystem compatibility evaluation to ensure smooth application and device compatibility across updates.

• Enhanced printer provisioning in educational environments with multifunction printers.

• Resolved a memory leak occurring in logon session processing.

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Known Issues in This Update

Below are known issues users may encounter after installing this update, along with possible workarounds:

Internet Explorer and Authentication Issues:

• Symptom: Internet Explorer 11 and other applications using WININET.DLL may experience authentication issues when multiple users log in concurrently to the same Windows Server machine.

• Workaround: This issue has been resolved in KB4493509.

MSXML6 Crashes:

• Symptom: Applications may stop responding if MSXML6 throws an exception during node operations (e.g., appendChild(), insertBefore(), moveNode()).

• Workaround: Install KB4493509.

Custom URI Scheme Failure in Internet Explorer:

• Symptom: Custom URI Schemes may fail to open corresponding applications for local intranet and trusted sites.

• Workaround: Right-click the URL link to open it in a new window or tab or enable Protected Mode in Internet Explorer.

PXE Boot Issues with WDS Servers:

• Symptom: PXE boot from a Windows Deployment Services (WDS) server configured to use Variable Window Extension may fail.

• Workaround: Disable the Variable Window Extension on the WDS server using one of the following methods:

  • Command Prompt: Wdsutil /Set-TransportServer /EnableTftpVariableWindowExtension:No

  • Windows Deployment Services UI: Navigate to Windows Administrative Tools > WDS Server Properties > TFTP tab > Uncheck “Enable Variable Window Extension”.

  • Registry Edit: Set HKLM\System\CurrentControlSet\Services\WDSServer\Providers\WDSTFTP\EnableVariableWindowExtension to 0 and restart the WDS Server service.

Per Font End-User Defined Characters (EUDC) Issue:

• Symptom: Enabling per-font EUDC may cause the system to crash with a blue screen.

• Workaround: Install KB4493509.

Cluster Shared Volume (CSV) Operations Failing:

• Symptom: Certain operations like renaming files/folders on CSV may fail with the error STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5).

• Workaround:

  • Perform operations from a process with administrator privileges.

  • Perform the operation from a node that does not have CSV ownership.