Microsoft releases KB4535996 for Windows 10 version 1903 and 1909

Martin Brinkmann
Feb 28, 2020
Windows, Windows 10, Windows Updates

Microsoft has released a new (optional) cumulative update for the company's Windows 10 operating system versions 1903 and 1909.

KB4535996 is available as an optional update via Windows Update, via Windows Server Update Services, and as a direct download on the company's Microsoft Update Catalog website.

The update introduces non-security changes only. Note that it is optional at this point in time and that its changes will be included in the March 2020 cumulative updates.

KB4535996  for Windows 10 version 1903 and 1909

KB4535996 windows 10 1903 1909

The updates for Windows 10 version 1903 and 1909 are identical. Microsoft fixed Windows Search and battery issues in this update among other things.

Here is what is fixed in the new update:

  • Fixed a speech platform issue that prevented it from opening in "high noise environments".
  • Fixed a Windows Mixed Reality home environment issue that reduced the image quality.
  • Fixed a PeerDist-encoded content issue in Internet Explorer and Microsoft Edge.
  • Fixed an ActiveX issue that might prevent it from loading.
  • Fixed an issue in Microsoft browsers that might cause the browsers to bypass proxy servers.
  • Fixed an issue that could prevent Centennial apps from opening.
  • Fixed an issue that prevented the installation or upgrading of UWP apps in some situations.
  • Fixed a Microsoft Narrator issue that caused it to stop working if a user session exceeded 30 minutes.
  • Fixed an update issue that caused an unwanted keyboard layout to be set as the default after upgrades or migrations even if it was already removed.
  • Fixed an unmentioned issue when editing MOV file properties.
  • Fixed an issue that caused usbvideo.sys to stop working after a device resumes from Sleep or Suspend after using the Camera app or Windows Hello.
  • Fixed a Group Policy issue that caused the policy "Allow uninstallation of language features when a language is uninstalled" from taking effect.
  • Fixed a Windows Search box issue that prevented it from "rendering fully in the space allotted for it2.
  • Fixed an Input Method Editor issue that prevented the use of the user dictionary when "leveraging folder redirection with user profiles".
  • Fixed a Windows Search issue that prevented it from showing results.
  • Fixed an issue that caused the Windows installation to stop responding on a VMWare guest machine wit a USB 3.0 hub.
  • Fixed an unnamed Windows Autopilot self-deploying mode and white glove deployment issue.
  • Fixed a PowerShell workflow issue that might make these fail with compilation errors for long sessions.
  • Fixed a product key activation issue in a user's Managed Service Account in the Windows activation troubleshooter.
  • Fixed an issue that caused applications deployed using the Microsoft Installer from being installed using the mobile device management platform.
  • Fixed an "unknown username or bad password" error when attempting to sign in in an "environment that has a Windows Server 2003 domain controller (DC) and a Windows Server 2016 or later DC".
  • Fixed an issue with sign-in scripts that caused them to fail to run.
  • Fixed a data collection issue with isTouchCapable and GetSystemSKU.
  • Fixed an issue that caused AAD joined systems to rejoin the AAD domain.
  • Fixed an issue with the WinHTTP AutoProxy service and the maximum Time to Live on Proxy auto-configuration files.
  • Fixed a printer selection issue in the SQL reporting service that caused the wrong printer name to be selected.
  • Fixed a printer user interface issue that prevented it from being displayed correctly.
  • Fixed a Network Profile Service issue that might cause the computer to stop responding.
  • Fixed an issue that could cause some applications to fail to print to network printers.
  • Fixed an issue that caused some printers to be a hidden device in Device Manager.
  • Fixed an issue that caused Host Networking Service PortMapping policies to leak.
  • Fixed a stop error that occurred when mounting Resilient File System volumes without a physical device.
  • Fixed an Open Database Connectivity issue that caused an infinity loop.
  • Fixed an issue that caused the Local Security Authority Subsystem Service to stop working and to trigger a restart of the system.
  • Fixed an issue that intermittently generated Online Certificate Status Protocol (OSCP) Responder audit event 5125 to indicate that a request was submitted to the OCSP Responder Service.
  • Fixed an issue that caused queries against large keys on Ntds.dit to fail with the error, “MAPI_E_NOT_ENOUGH_RESOURCES”.
  • Fixed a log corruption issue when a storage volume is full.
  • Fixed an unnamed error that caused _NFS4SRV_FILE_CACHE_ENTRY and DirectoryCacheLock to stop responding.
  • Fixed a Server Message Block Multichannel issue that prevented it from working within a cluster network that has IPv6 Local-Link addresses.
  • Fixed an issue that could cause Storage Migration Service inventory operations on a Windows Server 2003 source computer to fail in clustered environments.
  • Fixed a timing issue that could lead to the stop error 0x27 in mrxsmb20!Smb2InvalidateFileInfoCacheEntry.
  • Fixed an issue in the Storage Migration Service that caused the Cutover stage to stop working during migration if an administrator assigned a static IP address to the source adapter.
  • Fixed an issue in which canceling a deduplication (dedup) job to rebuild hotspots prevented other deduplication PowerShell commands from responding.
  • Fixed a Remote Desktop session disconnect issue.
  • Fixed an issue that made Windows Defender Application Control's Code integrity-based events unreadable.
  • Fixed a certification issue that caused Internet Explorer mode on Microsoft Edge to fail.


  • Battery performance during Modern Standby mode improved
  • Improved Event Forwarding scalability to ensure thread safety and increase resources.
  • Improved Urlmon resiliency when receiving incorrect Content-Length for a PeerDist response.

Microsoft lists no know issues for the update.

Microsoft releases KB4535996 for Windows 10 version 1903 and 1909
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Microsoft releases KB4535996 for Windows 10 version 1903 and 1909
Microsoft has released a new (optional) cumulative update for the company's Windows 10 operating system versions 1903 and 1909. 
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  1. Dan Donx said on January 15, 2023 at 10:29 am

    What mental age of reader are you targeting with the first sentence? 10?

    Why not write an article on how to *avoid* upgrading from W10 to W11. Analogous to those like me who avoided upgrading from 7 to 10 for as long as possible.

    If your paymaster Microsoft permits it, of course.

  2. Dexter said on January 15, 2023 at 11:14 am

    5. Rufus
    6. Ventoy

    PS. I hate reading these “SEO optimized” articles.

    1. cdr said on January 15, 2023 at 3:32 pm

      I used Rufus to create an installer for a 6th gen intel i5 that had MBR. It upgraded using Setup. No issues except for Win 11 always prompting me to replace my local account. Still using Win 10 Pro on all my other PCs to avoid the bullying.

  3. sv said on January 15, 2023 at 6:40 pm

    bit pointless to upgrade for the sake of upgrading as you never know when you’ll get locked out because ms might suddenly not provide updates to unsupported systems.

    ps…. time travelling?
    written. Jan 15, 2023
    Updated • Jan 13, 2023

    1. Martin Brinkmann said on January 16, 2023 at 5:49 am

      This happens when you schedule a post in WordPress and update it before setting the publication date.

  4. Anonymous said on January 16, 2023 at 8:24 am

    Anyone willing to downgrade to this awful OS must like inflicting themselves with harm.

  5. basingstoke said on January 16, 2023 at 11:18 am

    I have become convinced now that anybody who has no qualms with using Windows 11/10 must fit into one of the following brackets:

    1) Too young to remember a time before W10 and W11 (doesn’t know better)

    2) Wants to play the latest games on their PC above anything else (or deeply needs some software which already dropped W7 support)

    3) Doesn’t know too much about how computers work, worried that they’d be absolutely lost and in trouble without the “”latest security””

    4) Microsoft apologist that tries to justify that the latest “features” and “changes” are actually a good thing, that improve Windows

    5) Uses their computer to do a bare minimum of like 3 different things, browse web, check emails, etc, so really doesn’t fuss

    Obviously that doesn’t cover everyone, there’s also the category that:

    6) Actually liked W7 more than 10, and held out as long as possible before switching, begrudgingly uses 10 now

    Have I missed any group off this list?

    1. Heinz Strunk said on September 19, 2023 at 3:57 pm

      You have missed in this group just about any professional user that uses business software like CAD programs or ERP Programs which are 99% of all professional users from this list.

      Linux doesn’t help anyone who is not a linux kid and apple is just a fancy facebook machine.

  6. ilev said on August 24, 2023 at 7:34 pm

    Microsoft has removed KB5029351 update

    1. EP said on August 24, 2023 at 9:21 pm

      only from windows update though
      KB5029351 is still available from the ms update catalog site

  7. Anonymous said on August 24, 2023 at 11:05 pm

    1. This update is labaled as PREVIEW if it causes issues to unintelligent people, then they shouldn’t have allowed Preview updates ot install.

    2. I have installed it in a 11 years old computer, and no problems at all.

    3. Making a big drama over a bluescreen for an updated labeled as preview is ridiculous.

    This is probably another BS internet drama where people ran programs and scripts that modified the registry until they broke Windows, just for removing stuff that they weren’t even using just for the sake of it.
    Maybe people should stop playing geeks and actually either use Windows 10 or Windows 11, but don’t try to modify things just for the sake of it.

    Sometimes removing or stopping things (like defender is a perfect example) only need intelligence, not scripts or 3rd party programs that might mess with windows.

  8. john said on August 24, 2023 at 11:17 pm

    Windows 11 was a pointless release, it was just created because some of the Windows team wanted to boost sales with some sort of new and improved Windows 10. Instead, Microsoft cannot support one version well let alone two.

    1. John G. said on August 25, 2023 at 12:08 pm

      Windows 11 is the worst ugly shame by Microsoft ever. They should release with every new W11 version a complete free version of Starallback inside just to make this sh** OS functionally again.

  9. EP said on August 25, 2023 at 3:10 pm

    motherboard maker MSI has recently released a statement regarding the “unsupported processor” blue screen error for their boards using Intel 600/700 series chipsets & to avoid the KB5029351 Win11 update:–UNSUPPORTED-PROCESSOR–Error-Message-of-Windows-11-Update-KB5029351-Preview-142215

  10. EP said on August 29, 2023 at 7:32 pm

    check out the following recent articles:

    Neowin – Microsoft puts little blame on its Windows update after UNSUPPORTED PROCESSOR BSOD bug:

    BleepingComputer – Microsoft blames ‘unsupported processor’ blue screens on OEM vendors:

  11. Leonard Britvolli said on August 30, 2023 at 10:33 pm

    While there may be changes or updates to the Windows 10 Store for Business and Education in the future, it is premature to conclude that it will be discontinued based solely on rumors.

  12. sembrador said on September 5, 2023 at 9:32 pm

    My advice, I left win 15 years ago. Now I’m a happy linux user (linuxmint) but there is Centos, Fedora, Ubuntu depending on your needs.

  13. EP said on September 6, 2023 at 11:55 am

    motherboard maker MSI has recently released new BIOS/firmware updates for their Intel 600 & 700 series motherboards to fix the “UNSUPPORTED_PROCESSOR” problem (Sept. 6):–UNSUPPORTED-PROCESSOR–caused-BSOD-on-MSI-s-Intel-700-and-600-Series-Motherboards-142277

  14. Raphael Benzo said on September 24, 2023 at 9:52 pm

    I try to disable the Diagnostics Tracking Service (Connected Devices Platform User Services) but it wont let me disable it, any help will be greatly appreciated.
    Tank you for your help

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