How to Resolve KB5034441 Update Error 0x80070643 on Windows 10 (Solved)

Many users have encountered issues with the Windows Recovery Environment update KB5034441 for Windows 10, which fails to install with the error code: 0x80070643. This issue is recognized by Microsoft, and the recommended solution involves increasing the size of the recovery partition.

The KB5034441 update addresses a critical security vulnerability in the recovery environment that could potentially allow attackers to bypass BitLocker encryption using WinRE. For the update to install successfully, 250 MB of free space in the Recovery partition is required. If this space is unavailable, the update fails with the error message:

• 0x80070643 – ERROR_INSTALL_FAILURE

If you are unable to install the "2024-01 Security Update for Windows 10 Version 22H2 for x64-based Systems (KB5034441)" due to error 0x80070643, continue reading for solutions.

How to Fix Error Code 0x80070643 on Windows 10 22H2 KB5034441 Update

Method 1. Increase Recovery Partition Size with MiniTool Partition Wizard Free

As Microsoft advises, the KB5034441 update requires 250 MB of free space on the recovery partition. To prevent the "0x80070643 – ERROR_INSTALL_FAILURE" error, you must manually resize the recovery partition as detailed in this Microsoft article: KB5028997: Instructions to manually resize your partition to install the WinRE update.

For a simpler method, you can use a free partition management tool like MiniTool Partition Wizard Free or AOMEI Partition Assistant Free to resize the recovery partition using the instructions below:

* Note: For this tutorial, we will use MiniTool Partition Wizard Free.

Step 1. Notice the Size of the Recovery Partition in Disk Management

1. Press Windows + R keys to open the run command box.
2. In the Open box, type: diskmgmt.msc & click OK.

3. In Disk Management, locate the "Recovery Partition" and note its size in MB (e.g., "534 MB" in this example).

4. Based on the size, proceed as follows:

• If the Recovery Partition is below 250 MB, continue to Step 2 below.
• If the Recovery Partition is over 250 MB, skip to Method 2.
• If the Recovery Partition is missing, you can safely ignore the error 0x80070643, as the KB5034441 update is unnecessary. In this case, proceed to Method 4 to hide the update.

4. Close Disk Management and continue to the next step.

Step 2. Backup your data to an external USB drive

Important: As a precaution, back up your data to an external storage device (e.g., a USB disk) before resizing partitions.

Step 3. Install MiniTool Partition Wizard Free

1. Download MiniTool Partition Wizard Free.
2. Once the download is complete, open the downloaded file and install the Free edition of the program.

3. When the installation is complete, proceed to the next step.

Step 4. Resize Recovery Partition using MiniTool Partition Wizard

1. Open MiniTool Partition Wizard.
2. Locate and select the Recovery Partition based on its size in MB as noted in Step 1 above (e.g., "534 MB" in this example), and then click Extend Partition on the left pane.

3. Use the slider to allocate at least 200 MB of space from the C: drive to increase the Recovery Partition size by 200 MB. When done, click OK.

4. Click the Apply button to apply the change.

5. Close all open applications and click Yes to proceed.

6. Finally, click Restart Now to restart the computer so that MiniTool Partition Wizard can complete the pending tasks.

7. After restarting the computer, MiniTool Partition Wizard will resize the partition. Wait for the task to complete and do not turn off your computer. When the operation is complete, your computer will automatically restart and enter Windows.

8. After entering Windows, open Disk Management again and verify that the size of the Recovery Partition has increased.

9. Finally, open Windows Update and try to install the KB5034441 update on Windows 10 again.

* Note: Several users have reported that the error 0x80070643 in Windows 10 KB5034441 update persists even after increasing the Recovery partition size. If you encounter the same issue, try the following methods or proceed directly to Method 4 to hide the update until Microsoft resolves the issue.

Method 2. Repair Windows System Files with DISM & SFC Tools

The next method to resolve the installation error 0x80070643 in the KB5034441 update involves checking and repairing Windows 10 system files using the DISM and SFC tools. To do this:

1. Open Command Prompt as Administrator.
2. In the command prompt, enter the following command and press Enter:
   • DISM /Online /Cleanup-Image /StartComponentCleanup

3. Once the process is complete, enter the following command:

• DISM.exe /Online /Cleanup-image /Restorehealth

4. After the DISM operation is complete, type the following command and press Enter:

• sfc /scannow

5. Wait for the System File Checker (SFC) to repair the Windows System Files.

6. Once done, restart your computer.

7. Open Windows Update and attempt to install the failed update(s) again.

Method 3. Force Windows 10 to Redownload KB5034441

Occasionally, updates fail to install because they were not downloaded correctly. In such cases, forcing Windows to redownload and retry installing the updates can resolve the issue. To do this:

Step 1: Stop the 'Windows Update' service

1. Press Windows + R keys to open the run command box.
2. In the Search box, type: services.msc & click OK to open the Services panel.

3. In the Services control panel, locate the Windows Update service.

3a. Right-click on the Windows Update service and select Stop.

4. Without closing the Services window, proceed to Step 2 below.

Step 2: Delete the 'SoftwareDistribution' folder *

* Info: The “C:\Windows\SoftwareDistribution“ folder stores Windows Updates. This folder can sometimes become corrupted, requiring recreation to download updates from scratch.

1. Open Windows Explorer and navigate to the C:\Windows folder.
2. Find and delete or rename the SoftwareDistribution folder (e.g., to “SoftwareDistributionOLD”).

Step 3. Start the 'Windows Update' service

Now open the Services control panel and start the Windows Update service.

1. Right-click on the Windows Update service and select Start.

Step 4: Check and Install Windows 10 Updates

1. Navigate to Start > Settings > Windows Update and click Check for Updates.
2. Allow Windows to download and install the update(s).

Method 4. Hide the KB5034441 Update

If none of the above methods resolve the issue, you can instruct Windows 10 to skip and not install the KB5034441 Update until Microsoft addresses the problem. To do this:

1. Download the Show or Hide Updates troubleshooter tool (wushowhide.diagcab) from one of the following locations:
   • Microsoft Download Center
   • MajorGeeks
2. Run the Show or hide updates tool and click Next on the first screen.

3. On the next screen, choose Hide Updates.

4. Check the 2024-01 Security Update for Windows 10 Version 22H2 for x64-based Systems (KB5034441) and click Next.

5. Wait for the troubleshooter to apply the appropriate changes and then click Close.

6. Navigate to Windows Update options and click Check for Updates.

Method 5. Fix Error 0x80070643 in KB5034441 using Media Creation Tool

The final method to resolve the download error 0x80070643 in the "2024-01 Security Update for Windows 10 22H2 (KB5034441)" is to repair and upgrade Windows using the Windows 10 Media Creation Tool (MCT).

1. Navigate to the Windows 10 Download website and under the "Create Windows 10 installation media" section, click Download Now.

2. Then double-click to open the MediaCreationTool22H2.exe.

3. On the first screen, Accept the License Terms.

4. Select Upgrade this PC now and click Next.

5. Wait while the Windows 10 Setup wizard downloads Windows 10.

6. Once complete, click Accept again on the License terms and allow Windows to check for updates.

7. Then click Install to reinstall Windows 10 while keeping your personal files and apps.

8. Wait until Windows is installed and do not interrupt the process. Once complete, your PC will enter Windows normally.

9. Next, go to Windows Update, click Check for updates, and allow Windows to install all updates. This time, the KB5034441 update should install without issues.

* Note: To verify that the KB5034441 update is installed successfully, click on the "View update history" option in 'Windows Update'.

Summary

Troubleshooting the KB5034441 update error 0x80070643 involves several steps. Start by increasing the recovery partition size using a partition management tool. If the issue persists, repair system files with DISM and SFC tools, or force Windows to redownload the update. If these methods fail, you can hide the update or use the Media Creation Tool to repair and upgrade Windows. Each method addresses different potential causes of the error, ensuring a comprehensive approach to resolving the issue.

That's all folks! Did it work for you? If so, by what method? Please leave a comment in the comment section below or even better: like and share this blog post on social networks to help spread the word about this problem.

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Konstantinos Tsoukalas

Konstantinos is the founder and administrator of Repairwin.com. Since 1995 he works and provides IT support as a computer and network expert to individuals and large companies. He is specialized in solving problems related to Windows or other Microsoft products (Windows Server, Office, Microsoft 365, etc.).

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