KB4519338 updates Windows 10 1809 to Build 17763.806 – 8 Oct 2019

Microsoft brings a new cumulative update KB4519338 for Windows 10 1809 users on 8th October 2019. This is basically a security patch that takes the existing OS to build 17763.806 along with updating IE, Edge and Windows Components. Furthermore, KB4519338 addresses a printing issue that some users have recently encountered in the previous build. 

Users may grab this Tuesday patch update through Windows Update or Windows Server Update Services (WSUS) automatically. The company resolves a long-time occurring error which shortens CPU utilization as well as decreases connection latency. Moreover, like all other patch updates, KB4519338 replaces its preceding updates.

KB4519338

Fixes and Improvements

Here, we depict the key features that came along with the KB4519338 security update-

  • After updating to the Build 17763.806, users may utilize the CPU to the fullest along with increased connection latency. Prior to this build, there was an issue on the security bulletin CVE-2019-1318 that restricts client or server computers from supporting Extended Master Secret (EMS) RFC 7627. The above error arises primarily when you perform a full Transport Layer Security (TLS) handshake from devices that don’t support EMS, especially on servers. Since 2015, the core team has enabled EMS support for all of the supported Windows 10 versions. This becomes a necessity when you upgrade your OS to Windows 10 19H2 or upcoming monthly updates.
  • Improves the anomaly that lets any application or printer driver uses the Windows JavaScript engine (jscript.dll) to perform print jobs.
  • Rolls security updates for the following-
    • Windows Server
    • Microsoft Scripting Engine
    • Internet Information Services
    • Windows Kernel
    • Microsoft JET Database Engine
    • Windows Authentication
    • Windows Cryptography
    • Microsoft Edge
    • Internet Explorer
    • Windows Storage and File-systems

KB4519338 – Known Issues

There may appear following issues after installing this cumulative update on your device-

Symptom Workaround

On performing certain actions with build 17763.806, like renaming of files and folders, this may prompt the following error message –

“STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”

This flaw occurs when you don’t have administrative privileges to execute these actions on a Cluster Shared Volume.

To resolve this bug, perform the operation using-

  • A procedure that has admin rights.
  • A node that doesn’t require CSV ownership.

The Company may release a permanent solution to this very soon as they are currently working on a resolution.

The company is investigating the issue that leads to a black screen on a few devices. 

Basically, this trouble arises with KB4519338 when signing into your PC for the first time after installing the latest cumulative update. 

To resolve the underlying cause, jointly press the Ctrl+Alt & Delete keys thereafter choose the Power button and hit Restart

The Company may release a permanent solution to this very soon as they are currently working on a resolution.

On grabbing KB4493509, devices with some Asian language packs installed may struggle an error. The prompted error message is- “0x800f0982 – PSFX_E_MATCHING_COMPONENT_NOT_FOUND.”

  1. At first, uninstall and reinstall any newly added language packs.
  2. Click on Check for Updates and then install the April 2019 Cumulative Update.

On getting KB4519338, users may get a “15-5” error message on Windows Mixed Reality Portal.

Besides, in some cases, Windows Mixed Reality Portal may report that the headset is sleeping. If you press “Wake up”, this might result in “no action”.

To fix this anomaly, simply follow these steps-

  1. Close the Windows Mixed Reality Portal, if it is running.
  2. Open Task Manager by selecting the Start button and typing “task manager.
  3. In Task Manager, under the Processes tab, right-click Windows Explorer and select Restart.
  4. Open the Windows Mixed Reality Portal.

Note: Microsoft is working on a resolution and will provide an update in an upcoming release.

How to get this Update

We suggest you download the KB4521862 servicing stack update before proceeding to install the latest cumulative update. KB4519338 also ensures no bug appears during the whole update process. You may get this patch update through following ways-

1. Windows Update

Navigate to Settings > Update & Security > Windows Update and tap “Check for Updates” button.

2. Microsoft Update Catalog

Click here to download the standalone package.

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