Confirmation has been provided by Microsoft that they are incapable of fixing the KB5034441 0x80070643 error on Windows 10. The occurrence of this problem dates back to January when the initial security patches for Windows 10 and Windows 11 were released.
During the Patch Tuesday release, users encountered the KB5034441 0x80070643 error. An “Error Install Failure” notification was displayed when attempting to install the update, and despite reinstalling, the issue persisted. The impacted systems included Windows 11 version 21H2, Windows 10 versions 22H2 and 21H2, and Windows Server 2022.
Microsoft identified this as a recognized issue and disclosed that the update was designed to address a security vulnerability linked to the Windows Recovery Environment (WinRE). The exploitation of this vulnerability could result in bypassing BitLocker encryption. The primary obstacle arose from limited disk space, with the update necessitating a minimum of 250 megabytes of free space in the WinRE partition for successful installation. Ironically, some users encountered this error even without a recovery partition, as the update failed to detect its presence.
Given the significant security threat posed by the update, Microsoft could not withdraw it. Consequently, users continued to encounter the error when attempting to download the package or checking for updates.
Microsoft Admits Challenges in Resolving KB5034441 0x80070643 Error using Windows Update
After a four-month delay, Microsoft announced that the KB5034441 0x80070643 error will not be automatically rectified in a forthcoming Windows update. Nevertheless, this does not signify an insurmountable obstacle; users will need to undertake manual measures to address it.
Instructions on expanding the WinRE partition to resolve the issue were provided by Microsoft, which may appear intricate but can be accomplished gradually. To simplify the process of extending the Windows RE Partition, Microsoft offers a PowerShell script code. It is advisable to create a backup of your PC before executing the script for safety.
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