How to Use PowerShell Script for Windows 10 0x80070643 Error?

Solve Windows 10 KB5034441 update error code 0x80070643: Using PowerShell Scripts

Windows 10 KB5034441 update failed with error code 0x80070643? Microsoft provides a PowerShell script that automatically updates WinRE partitions, thus fixing the BitLocker security feature bypass vulnerability (CVE-2024-20666). This article will guide you on how to use the script.

Problem background: BitLocker security vulnerability and KB5034441 update

The CVE-2024-20666 vulnerability allows an attacker to access encrypted data bypassing the BitLocker device encryption feature, affecting Windows 10, 11 and Windows Server 2022/2019/2016. Microsoft released the KB5034441 update on January 9, 2024 to solve this problem, but some users encountered 0x80070643 errors during the installation process, and sometimes there was a prompt message "Windows recovery environment service failed. (CBS_E_INSUFFICIENT_DISK_SPACE)". The root cause is usually insufficient recovery partition space and requires at least 250 MB of free space.

In addition to manually resizing partitions, Microsoft provides PowerShell scripts as an official solution.

Fix 0x80070643 error using PowerShell script

The PowerShell script provided by Microsoft can automatically update WinRE partitions, solving BitLocker encryption bypass vulnerability. Be sure to run the script with administrator privileges.

According to the Windows version, Microsoft provides two scripts:

• PatchWinREScript_2004plus.ps1 : For Windows 10 2004 and later (including Windows 11)
• PatchWinREScript_General.ps1 : For Windows 10 1909 and earlier

Select the script that suits your Windows version and follow these steps:

Step 1: Backup the system

Before making any changes, it is highly recommended that you back up your PC because there is a risk of damage to tweak your system partitions. It is recommended to use backup tools such as MiniTool ShadowMaker to create system images or back up important files.

Step 2: Download the secure operating system dynamic update package

Visit Microsoft Update Catalog to download the secure operating system dynamic update package that matches your system architecture (it is recommended to download the latest version).

Step 3: Get PowerShell Script

Find and copy PowerShell scripts for your Windows version in the Microsoft KB5034957 article.

Step 4: Save PowerShell Scripts

Open Notepad in Windows 10, paste the copied script, and click "File>Save As". Select "All Files ( . )" as the file type and save the file with the .ps1 extension.

Step 5: Run PowerShell Script

Right-click the saved PowerShell script and select Run as PowerShell.

Step 6: Enter the update package path

When the script is running, you will be prompted to enter the full path and file name of the downloaded secure operating system dynamic update package.

Step 7: Use the Show or Hide Updates tool

After running the script, use Microsoft's "Show or Hide Update" tool to unhide the KB5034441 update to prevent Windows Update from blocking the installation again and displaying the 0x80070643 error.

Summarize

If the KB5034441 update fails, in addition to manually adjusting the partition size, you can also use the PowerShell script provided by Microsoft to resolve the BitLocker encryption bypass vulnerability. Developing the habit of backing up data regularly can effectively protect your data security. Use backup tools such as MiniTool ShadowMaker to simplify the backup process.

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