Windows 10 1809 KB4490481: the missing patch arrives, finally

Microsoft released the long awaited second cumulative update of the month KB4490481 for Windows 10 version 1809 yesterday evening.

Why did it take so long to release when cumulative updates for all other supported versions of Windows 10 arrived on March 20, 2019? Because Microsoft learned from the mistakes it made when it released Windows 10 version 1809 and subsequent updates.

It appears, that Microsoft pushes updates for the current version of Windows 10 to an extra round of testing, courtesy of the release channel, before it releases it to the general population.

Update: Ran into a System Service Exception error on restart after installing the update on one machine. System Restore fixed the issue, Startup repair did not. End

KB4490481 for Windows 10 version 1809

microsoft windows 10 kb4490481

The update has been released, finally. Administrators may check for updates manually using Windows Update to download KB4490481 to machines. The update is also available as a standalone download on the Microsoft Update Catalog.

Note: The update fixes a huge number of issues and still suffers from the same five known issues that previous versions of Windows 10 version 1809 suffered from.

Here is the list of changes:

  • Fixed the long-standing audio issue that affected Windows 10 PCs with multiple audio devices.
  • Fixed a Game Mode issue that impacted streaming and recording software.
  • New option to activate Insider Builds of Windows 10 Enterprise for Virtual Desktops in Microsoft Azure.
  • Fixed an issue that caused the loss of Favorites or Reading List in Microsoft Edge during updates.
  • Fixed an issue that caused Internet Explorer to stop randomly.
  • Addressed an issue with scrolling ActiveX content in Internet Explorer 11.
  • Fixed an icon file loading issue if badly formatted icon files are encountered.
  • Time Zone information updated for various locations.
  • Fixed an issue with the GDI process that could cause the calling process to stop working under certain conditions.
  • Fixed a networking issue that prevented applications and callers from connecting to destination endpoints when a network interface did not have a default gateway.
  • Fixed a DHCP issue that caused it to reuse an expired lease.
  • Fixed an issue with the RemoteApp window that would make it come to the foreground and to remain active after closing a window.
  • Fixed an issue that prevented the authentication credentials dialog from appearing.
  • Fixed an issue that prevented Modern Apps icons from appearing in the Taskbar or Task Switcher during RemoteApps connections.
  • Fixed an issue that caused certain Modern Apps to fail to launch or stop working.
  • Addressed an issue that caused USB cameras to fail to register correctly for Windows Hello.
  • Added the Group Policy setting “Enable Windows to soft-disconnect a computer from a network”.
  • Fixed an issue that caused virtual smart cards from starting with Citrix 7.15.2000 Workstation VDA software.
  • Fixed an issue that prevented users from configuring screens for HDR video playback.
  • Fixed an issue that prevented users from unlocking a device using smart cards.
  • Fixed a memory leak “when a system processes login sessions”.
  • Fixed an issue with Always-On-VPN exclusion routes that made them work only for link-local exclusions.
  • Addressed an issue that caused certificate renewal to fail when using CERT_RENEWAL_PROP_ID with the ICertPropertyRenewal interface.
  • Fixed an issue that muted the sound of single-use applications after resuming from Sleep.
  • Addressed an issue to meet GB18030 certificate requirements.
  • Fixed an issue that caused server performance to slow down or servers to stop responding because of “numerous Windows firewall rules”. To enable the solution:
    • Open regedit
    • Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy
    • Set the Dword DeleteUserAppContainersOnLogoff to 1.
  • Fixed an issue that prevented the decryption of data (affected encrypted data using DPAPI-NG or group-protected PFX file).
  • Fixed an issue that affected the evaluation of the compatibility status of Windows.
  • Addressed minor issues with unknown options (unknown OPT) in the Extension Mechanisms for DNS (EDNS) for the Windows DNS Server role.
  • Fixed a timing issue when configuring Switch Embedded Teaming that could result in an access violation.
  • Fixed an issue of the Remove-StoragePool PowerShell cmdlet that failed to clear pool metadata on NVDIMM physical disks.
  • X2APIC supported enabled for AMD platforms.
  • Additional Japanese Era name fixes.
  • Fixed an issue that caused slow screen refreshes if applications created and destroyed many child windows.
  • Fixed an issue that caused the Start menu to reset.
  • Addressed an issue that caused Wdiwifi.SYS to stop working with the error “7E (0xc0000005)”

The five known issues (check the support page for potential solutions):

  • Internet Explorer 11 and other applications that use WININET.DLL may have authentication issues.
  • MSXML6 may cause applications to stop responding.
  • Custom URI Schemes for Application Protocol handlers may fail for local Intranet and trusted sites on Internet Explorer.
  • There may be issues using the Preboot Execution Environment to start a device from a WDS server configured to use Variable Window Extension.
  • Per font end-use-defined-characters may cause the system to stop working and may cause blue screens on start.

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Source: https://www.ghacks.net/2019/04/03/windows-10-1809-kb4490481-the-missing-patch-arrives-finally/