It is annoying when Windows updates always fail to download and install. Recently, many Windows patch updates turned out to be the same result and KB5034215 is one of them. So, if you want to dig out the reasons and find the ways to fix “KB5034215 fails to install”, MiniTool will give you a guide.

KB5034215 Fails to Install

KB5034215 is a cumulative update that brought Windows 11 Build 22635.3061 (23H2) with an improved Windows share. Some existing bugs and glitches are fixed in this version update.

Some users have tried this update but some of them report KB5034215 fails to install. To fix this issue, you can try to manually download and install the standalone package from the Microsoft update catalog. If that still fails, try the following solutions.

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Fix: KB5034215 Fails to Install

Fix 1: Run Windows Update Troubleshooter

Windows Update troubleshooter is useful to resolve the problems that prevent you from updating Windows. To run this utility, please do as follows.

Step 1: Open Settings by pressing Win + I and click Update & Security.

Step 2: In the Troubleshoot tab, click Additional troubleshooters and click on Windows Update > Run the troubleshooter.

click Run the troubleshooter
[Full Guide] How to Fix Windows Update Troubleshooter Not Working
[Full Guide] How to Fix Windows Update Troubleshooter Not Working

What if Windows Update Troubleshooter doesn’t work as intended? In this article, you will find multiple solutions to this annoying issue.

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Fix 2: Restart Relevant Services

Windows update requires some related services to run well. If some glitches in the service, the KB5034215 failed to install. Check if those services have been enabled and restart them.

Step 1: Type services in Search and open the result under Best match.

Step 2: Scroll down to locate and double-click on Background Intelligent Transfer Service, make sure its Startup type is set as Automatic, and click Start to make the service run.

click Start

Then click Apply > OK to save the changes. After that, please repeat the steps to check Windows Update and Cryptographic Services separately for their startup types and status.

Fix 3: Run SFC and DISM

Damaged system files can cause KB5034215 not installing, so you can perform SFC and DISM scans to check and repair the corruption.

Step 1: Type Command Prompt in Search and choose Run as administrator.

Step 2: In the Command Prompt window, copy and paste the command and press Enter to execute it.

sfc /scannow

Step 3: It will take some time to finish the execution and if the command fails, you can proceed to the DISM commands. Please run the following commands one by one.

  • DISM /Online /Cleanup-Image /CheckHealth
  • DISM /Online /Cleanup-Image /ScanHealth
  • DISM /Online /Cleanup-Image /RestoreHealth

Fix 4: Temporarily Disable Antivirus

Aggressive antivirus may affect Windows updates, and even some other processes may get undermined. You can temporarily disable your third-party antivirus and check if the KB5034215 not downloading issue gets resolved.

If you don’t have installed any others, you can follow the steps to temporarily disable Windows Defender.

Step 1: Open Security > Update & Security > Windows Security > Virus & threat protection.

Step 2: Click Manage settings under Virus & threat protection settings and turn off Real-time protection.

turn off Real-time protection

Now, you can try the Windows update again. After the move, remember to re-enable the real-time protection.

Fix 5: Perform Disk Cleanup

You can try Disk Cleanup when KB5034215 fails to install.

Step 1: Open File Explorer and right-click on the drive you want to clean to choose Properties.

Step 2: In the General tab, click Disk Cleanup and then choose Clean up system files.

Step 3: Check the files to delete and click OK. If you can’t make sure which ones are available to delete, you can read this post for a reference: What Is Safe to Delete in Disk Cleanup? Here Is the Answer.

Bottom Line:

This article about “KB5034215 fails to install” has given you multiple methods to resolve the update failure issue. Hope it is useful for you.

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