KB5007253 Windows 10 Build 19044.1379, 19043.1379 for 21H1, 21H2 LCU Preview

Windows 10 Build 19044.1379 and 19043.1379 or KB5007253 changelog, bug fixes, and download link.

KB5007253 Windows 10 Build 19044.1379, 19043.1379

Beta and Release preview or RP channel of Windows 10 insider have obtained an update with several remarkable improvements and bug fixes. These are Windows 10 Build 19044.1379 for 21H2 version and Windows 10 19043.1379 for 21H1 version that bring fixes for problems with exe process opening, searchindexer.exe, Internet Explorer, etc. Both are rolled out in the form of the cumulative update preview KB5007253.

Code name of the updates are OS Build 19044.1348.vb_release_svc_prod1.211101-1451 and OS Build 19043/19044.1379.vb_release_svc_prod2.211102-1716.

Windows 10 Build 19044.1379, 19043.1379 for 21H1, 21H2 LCU Preview KB5007253 change and fixes

Here is the changelog –

  1. KB5007253 cumulative update preview fixed exe process opening problem.
  2. Experts in the Insider team fixed searchindexer.exe. This will help to keep handles to the per user search database in the underneath path after you sign out:


  1. Consequently, searchindexer.exe stops working as well as duplicate profile names are created.
  2. Windows 10 Build 19044.1379 / 19043.1379 added support for the cancellation of daylight savings time aka DST for the Republic of Fiji for 2021.
  3. The rollout fixed enrollment status page (ESP) that couldn’t display error message or remediation options after a failure.
  4. Beta build added the –cd argument to exe to indicate a Windows or Linux path as a starting directory for WSL.
  5. The update fixed Group Policy objects that couldn’t be applied automatically in the background at startup or to devices on a domain that has a certain processor.
  6. Experts in the team added the option to configure IPv4 maximum transmission unit (MTU) that is less than 576 bytes on an interface.
  7. They fixed event description for the System Center – Operations Manager that is not provided.
  8. Also, the update fixed the variable font rendering problem.
  9. The LCU fixed Microsoft Excel 32-bit stop working when exporting to PDF on the devices that have certain processors.
  10. Cumulative update preview fixed glyphs that are showing at the wrong angle when using the Metro UI font and other vertical fonts. These fonts are frequently used in Japan, China, or other countries in Asia.
  11. The experts in the Insider team enabled onunload events to create pop-up windows in Microsoft Edge Internet Explorer mode.
  12. Furthermore, they fixed the predictive pre-rendering problem in Microsoft Edge Internet Explorer mode.
  13. Windows 10 Build 19044.1379 / 19043.1379 fixed Internet Explorer not working.
  14. LCU KB5007253 fixed Internet Explorer not working when using the Input Method Editor to insert elements.
  15. The rollout fixed the Settings page that unexpectedly closes after uninstalling a font.
  16. The latest CU fixed a problem that affects the User Interface for renaming files when using folder view in File Explorer. The interface fails to appropriately manage inline composition when using the new Japanese Input Method Editor.
  17. Cumulative update preview KB5007253 fixed a memory leak in exe that occurs when you switch between different edit clients.
  18. The rollout fixed error code 0x00000709 0x000006e4 or 0x0000007c that takes place when connecting to a remote printer that is shared on a Windows print server.
  19. It fixed screen capture and recording functionality not working on the Windows Game Bar because of a service failure.
  20. The Insider team fixed the return value of GetCommandLineA () to be lowercase in some developer scenarios.
  21. They fixed the decryption of a file that is on a remote server gets failed. You would encounter the error message ERROR_DECRYPTION_FAILED when the problem occurs.
  22. Windows 10 Build 19044.1379 and 19043.1379 fixed BitLocker that could not be disabled on a thinly provisioned virtual machine aka VM. The error message that appears is like – A device attached to the system is not functioning” and the system logs, STATUS_UNSUCCESSFUL.
  23. The builds settled Windows Defender Application Control that wrongly compare two file version numbers.
  24. The rollout enabled credentials for Azure AD, ADFS users in Quick Assist.
  25. KB5007253 LCU fixed full screen view after starting a remote assistance session could not be enabled by Quick Assist users sometimes.
  26. The CU fixed a Group policy that could not be configured to show an application on the Start menu.
  27. Beta channel update fixed syncing of desktop settings that fail when using the built-in UE-V template.
  28. Furthermore, the rollout fixed Failover Clustering that could not update DNS records.
  29. Finally, it fixed starting up and unresponsiveness of a device that occurs because of licensing API calls.

How to check if you have installed this version

  1. Press the –  Windows logo key.
  2. Type – winver.
  3. Hit – Enter.

It should show Version 21H2” or “Version 21H1

Windows 10 Build 19044.1379 and 19043.1379 direct download link (when ready).

Source – Windows blog.

Update –

Windows 10 Build 19044.1381 for 21H2 for Build 19044.1381 for 21H1 are rolled out again via KB5007253. These updates are rolled out to the Release Preview channel and Beta channel on 18/11/2021.  This version has one fix –

We fixed an issue that might affect devices that use Windows Hello for Business and are joined to Azure Active Directory (AD). These devices might experience issues when they access on-premises resources, such as file shares or websites.

That’s all!!

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Topics:  Windows Insider
About Sunita
Love to play with Windows 11 and 10. Suggestion - Going for Registry change or system files edit then remember to take a backup or create a restore point before Starting.