KB4586819 Preview for Windows 10 1909 and 1903 Released

Windows 10 v1909 and v1903 has got 2 updates today. One is KB4594443 and the other is KB4586819 preview. The later one carries a huge list of fixes and improvements.

This update increases the version to 18363.18363.1237 and 18362.1237 respectively. See – Windows 10 Cumulative Updates List.

KB4586819 Preview for Windows 10 1909 and 1903

Here is the changelog –

Improvements and fixes

Windows 10 1909

This non-security update includes quality improvements. Key changes include:

• This build includes all the improvements from Windows 10, version 1903.
• No additional issues were documented for this release.

Windows 10 1903

This non-security update includes quality improvements. Key changes include:

1. This non-security patch updates IE/Internet Explorer’s About dialog to use the standard modern dialog.
2. KB4586819 addresses Chromium-based Microsoft Edge browser that starts in the background in tablet mode.
3. The LCU addresses Narrator that stops responding after you unlock a device if Narrator was in use before you locked the device.
4. Also, it addresses black screen to Windows Virtual Desktop (WVD) that appears when trying to sign in.
5. Experts on Windows 10 in Microsoft addresses Microsoft Changjie that causes apps to stop working because of a stack overflow.
6. They address USB 3.0 hubs problem. When you set a device to restart or hibernate it might stop working.
7. Furthermore, they address Windows inadvertently modify settings for certain IP cameras that are on the same network as the Windows device.
8. They address games that use spatial audio and it stops working.
9. The LCU Addresses leaking Graphics Device Interface (GDI) Font Handles that result in unexpected behaviors in certain applications.
10. The Patch addresses an issue with missing enforced groups in the Start menu layout, which occurs when using MDM to set the tile groups.
11. It also Addresses desktop wallpaper as configured by a Group Policy object that fails to set when you specify the local background as a solid color.
12. The latest non-security update addresses excessive network traffic that happens when you use the Open File dialog box in File Explorer and further browse to a shared folder that has the Previous Version feature available.
13. The experts team addresses the Search bar in Shell namespace extension products which causes File Explorer to stop working unexpectedly.
14. They address the failure of signing in on certain servers. The problem occurs when you enable a Group Policy that forces the start of a computer session to be interactive.
15. Also, they address the Sign-in options page that can not open via ms-settings:signinoptions-launchfaceenrollment.
16. The cumulative update addresses 0x57 error that occurs when the wecutil ss /c:command is used to update an Event Forwarding subscription.
17. KB4586819 addresses syncing across devices is not possible issue.
18. The patch addresses I forgot my Pin not working issue on the lock screen. This problem occurs if the user has signed in using a username and password and the HideFastUserSwitching or DontDisplayLastUserName policy settings are enabled.
19. LCU addresses applications failure issue that occurs when they call the LookupAccountSid(). The problem occurs after migrating accounts to a new domain whose name is shorter than the name of the previous domain.
20. The release addresses loading a Code Integrity Policy that causes PowerShell to leak a large amount of memory.
21. Patch a system stop working during startup problem. This happens when command-line argument auditing is turned on and CrashOnAuditFail policy is configured to 1.
22. Experts address the MMC Group Policy application that stops working when you are editing the Group Policy Security settings. The error message reads – MMC cannot initialize the snap-in.
23. They address the system’s non-paged pool that fails to free and requires a reboot of the system. The problem happens when running 32-bit apps with the FIPS mode enabled.
24. The cumulative update addresses the Azure Active Directory (AD) that can not be accessed using Chrome because of a Conditional Access policy error.
25. This patch Improves the visual quality of Mixed Reality headsets that run in lower resolution mode.
26. The LCU Extends Microsoft Defender for Endpoint support to new regions.
27. The developers address Microsoft Remote Procedure Call runtime that causes the DFSR service to stop responding. This problem creates log events for no reconnection (5004), RPC (1726), and DFS Replication (5014) for a default timeout of 24 hours with no replication.
28. Furthermore, it addresses wireless receivers that disconnect during a wireless projection session.
29. KB4586819 addresses the PDF24 app, version 9.1.1 that can not open .txt files.
30. The cumulative update addresses non-paged pool memory leak that occurs in some scenarios.
31. It addresses memory leak in sys that occurs when copying files in a container scenario.
32. Patch addresses AD CS that might prevent Certificate Transparency (CT) logs from being submitted if enabled.
33. Finally, it addresses the cluster validation tests internal switches that are not for cluster use and re-communication.

Known issues

How to download KB4586819 and install

Before installing this one ensure to have the latest SSU KB4586863. Now follow any of the methods –

1. Via auto Windows update

1. Press the Winkey and type – updates.
2. Select the – Check for updates.
3. At last click the – Restart now.

2. Manually through Microsoft update catalog

1. Go to the KB4586819 direct download link – https://www.catalog.update.microsoft.com/Search.aspx?q=KB4586819.
2. Download the appropriate file.
3. Right click on the downloaded MSU file and select – Open.
4. Follow the onscreen instructions.

That’s all!!