How to fix KB5039211 fails to install in Windows 10?

Issue: I can't install the latest Windows 10 update KB5039211. Any help would be appreciated (I never had problems with updates so I don't know what to do).

Solved Answer

Users should always keep Windows updated since new features, security patches, and bug fixes improve system operation and performance. Every month on the second Tuesday, Microsoft releases an update cycle called Patch Tuesday, which gives users access to the most recent fixes and enhancements for their operating systems.

Knowledge Base (KB) is a number assigned to these updates, which allow administrators and users to keep track of particular changes. KB5039211 was released on June 11, 2024, for Windows 10 versions 21H2 and 22H2 concurrently with the release of KB5039212 for Windows 11.

KB5039211 addresses several issues, including problems with the Local Security Authority Subsystem Service (lsass.exe), and issues affecting the Share button on USB controllers, and introduces a feature enabling the Snipping Tool to be used on Android devices.

Despite the importance of these updates, some users may encounter an issue where KB5039211 is not installing successfully. Common reasons for installation failures include corrupted system files, insufficient disk space, issues with bugged caches, security software conflicts, and necessary services not running.

Corrupted system files can disrupt the update process, while limited disk space can prevent the update from being downloaded and installed properly. Additionally, bugged caches and security software may interfere with the installation process, and if essential services are not running, the update cannot be applied successfully.

In cases where KB5039211 is not installing, you may need to take a few steps to fix the problem. Resolution might come by addressing faulty system files, making sure there is enough disk space, cleaning caches, turning off incompatible security software, and making sure all required services are operating. Please refer to the instructions below if you require assistance carrying out these actions.

In cases where determining the precise source of a problem is difficult, using a maintenance and repair tool like FortectMac Washing Machine X9 can be very helpful – it addresses issues with corrupted system files, faulty registry or DLLs, Blue Screen of Death (BSOD) failures, and more.

Fix 1. Run Windows update troubleshooter

Troubleshooters are useful built-in tools that can often help users to resolve problems related to particular Windows issues, such as updates.

• Right-click on Start and pick Settings.
• Select Update & Security.
• Click on Troubleshoot.
• Choose Windows Update.
• Click on Run the troubleshooter.
• Follow the on-screen instructions.

Fix 2. Repair Windows file corruption

Corrupted system files can often cause Windows to fail to install updates. You can run SFC and DISM utilities to fix them:

• Type cmd in Windows search.
• Right-click on Command Prompt and pick Run as administrator.
• User Account Control will ask you whether you want to allow changes – click Yes.
• Copy and paste this command and hit Enter:
  sfc /scannow
• Wait for the scan to finish.
• As soon as it finishes, Windows will report whether integrity violations were found and if they could be fixed. Regardless of the outcome, use these commands next, pressing Enter after each:
  Dism /Online /Cleanup-Image /CheckHealth
  Dism /Online /Cleanup-Image /ScanHealth
  Dism /Online /Cleanup-Image /RestoreHealth
• Close down the Command Prompt and restart your device.

Fix 3. Disable security or similar software

• Open security software installed on your system.
• Navigate to Settings.
• Look for an option to temporarily disable protection or turn off real-time scanning.
• Disable the protection and try installing the update again.

Fix 4. Install the update manually

If the automatic update fails, downloading and installing the update manually can bypass issues with Windows Update.

• Visit the Microsoft Update Catalog website.
• In the search bar, type the update number (KB5039211 in this case) and press Enter or click Search.
• Find the update that matches your system type (32-bit or 64-bit) and click Download.
• In the pop-up window, click the link to download the update.
• Once downloaded, run the update file and follow the on-screen instructions.
• Restart your PC.

Fix 5. Reset Windows update components

• Type cmd in Windows search.
• Right-click on Command Prompt and select Run as administrator.
• When the User Account Control window pops up, click Yes.
• Type the following commands one by one in Command Prompt and press Enter after each:
  net stop wuauserv
  net stop cryptSvc
  net stop bits
  net stop msiserver
  Del “%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\*.*”
  rmdir %systemroot%\SoftwareDistribution /S /Q
  rmdir %systemroot%\system32\catroot2 /S /Q
  regsvr32.exe /s atl.dll
  regsvr32.exe /s urlmon.dll
  regsvr32.exe /s mshtml.dll
• When these commands are executed, the last thing to do is to re-enable relevant services:
  net start wuauserv
  net start cryptSvc
  net start bits
  net start msiserver
• Reboot your device.

Fix 6. Perform Check Disk

Running the Check Disk utility can identify and repair disk errors that may be causing update installation failures.

• Open Command Prompt as administrator.
• In the new window, type in the following command and press Enter after:
  chkdsk c: /f
  (Note: use chkdsk c: /f /r /x command if you are using SSD. Also, replace c: with the external drive letter assigned upon insertion)
• If you receive an error, type in Y, close down Command Prompt, and restart your computer.
• Wait till the scan is finished.

Fix 7. Use Media Creation Tool

The Media Creation Tool can be used to upgrade your system to the latest version, effectively installing the update alongside other updates and system files.

• Visit the official Microsoft website and download Windows 10 installation media.
• Double-click the installer, select Yes when UAC shows up, and agree to the terms.
• Select Upgrade this PC now and click Next.
• Windows will start downloading the needed files.
• Agree to the terms once again and click Next.
• Before installing, ensure you are happy with your choices (otherwise, you can click the Change what to keep option).
• Finally, click Install to begin the upgrade process.

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