Cumulative Update KB4038801 Windows 10 v1607 Build 14393.1737

    Cumulative Update KB4038801 Windows 10 v1607 Build 14393.1737

    Cumulative Update KB4038801 Windows 10 v1607 Build 14393.1737

    Last Updated: 10 Oct 2017 at 12:25
    UPDATE 10/10: Cumulative Update KB4041691 Windows 10 v1607 Build 14393.1770 - Windows 10 Forums

    September 25, 2017 - KB4038801 (OS Build 14393.1737)

    Improvements and fixes

    This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:

    • Updated the BitLocker.psm1 PowerShell script to not log passwords when logging is enabled.
    • Addressed issue with the Lock Workstation setting for smart cards where, in some cases, the system doesn’t lock when the smart card is removed.
    • Addressed issue where saving a credential with an empty password to Credential Manager causes the system to stop working when attempting to use the credential.
    • Addressed issue where an access token is improperly closed from a WMI query.
    • Addressed issue where the size of a cloned file was improperly calculated by ReFS.
    • Addressed error STOP 0x44 in Npfs!NpFsdDirectoryControl.
    • Addressed error 0x1_SysCallNum_71_nt!KiSystemServiceExitPico.

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

    For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

    Note: This update is not available for Windows Server 2016.

    Windows Update Client Improvement
    Microsoft will release an update directly to the Windows Update Client to improve Windows Update reliability. It will only be offered to devices that have not installed any recent cumulative updates and are not currently managed (e.g., domain joined).

    Known issues in this update

    Microsoft is not currently aware of any issues with this update.

    How to get this update

    To get the standalone package for this update, go to the Microsoft Update Catalog website.

    File information

    For a list of the files that are provided in this update, download the file information for cumulative update 4038801.


    Direct download links for KB4038801 from Microsoft Update Catalog:

    Download KB4038801 MSU for Windows 10 Version 1607 32-bit (x86) - 619.0 MB

    Download KB4038801 MSU for Windows 10 Version 1607 64-bit (x64) - 1183.9 MB
    Brink's Avatar Posted By: Brink
    25 Sep 2017

  1. Brink's Avatar
    Posts : 56,285
    64-bit Windows 10 Pro for Workstations build 21359

    Release notes now available.

    It should be build 14393.1737 instead of build 14393.1736 shown before.
    Last edited by Brink; 25 Sep 2017 at 15:08.
      My Computers

  2. Czecher's Avatar
    Posts : 71
    Windows 10 Home 64 bit (build 1607)

    Hello guys, I'm not gonna do this update until it's going to be in windows update. I do think, it's always better to use automatic updates then download manually.
    So I wont download this update and I will wait abit, if they gonna add it into windows update.
      My Computer

  3. Josey Wales's Avatar
    Posts : 24,720
    Win 10 Pro 19043.928

    Thanks Shawn it installed flawlessly !

    Cumulative Update KB4038801 Windows 10 v1607 Build 14393.1737-wv.png
      My Computer


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