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Windows 10 KB5034441 Installation Error. Here’s the Solution!

Following the release of the Windows 10 KB5034441 update by Microsoft, a significant number of Windows 10 users have encountered difficulties during the installation process. This update, aimed at fixing a critical vulnerability in BitLocker software, has proved problematic, with users reporting error code 0x80070643.

Windows 10 KB5034441

Table of Contents

Windows 10 KB5034441 and Error Code 0x80070643

The vulnerability in question, identified as CVE-2024-20666, allowed attackers to bypass the encryption provided by BitLocker, exposing protected data to potential risks. Microsoft promptly responded to this threat by distributing the KB5034441 update. However, the installation of this update has led to a new set of challenges. Also, read our resolution guide for the Error 0x800f0805 on Windows 10 and 11.

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The 0x80070643 Error During the Update Installation

During the installation of the KB5034441 update, many users encountered error 0x80070643. Microsoft identified that the main cause of this problem lies in the size of the Windows Recovery Environment (WinRE) partition. Normally, this partition is about 500MB in size and contains the necessary tools to repair the operating system. The KB5034441 update, requiring an updated and larger recovery environment, exhausts the available space, leading to the error and blocking the installation.

Microsoft’s Proposed Solution for the 0x80070643 Error

To solve this issue, Microsoft has suggested users to manually shrink the main disk partition by 250MB to free up enough space to expand the recovery partition. However, this solution can be complicated, especially for less experienced users. Modifying partitions, if done incorrectly, can lead to data loss, especially if there is no backup.

Conclusions and Advice for Users

Considering the complexity and potential risks associated with Microsoft’s proposed solution, our advice is to refrain from making autonomous changes to disk partitions. It is preferable to wait for an automatic fix from Microsoft that can solve the problem without exposing you to unnecessary risks.In the meantime, it is essential to maintain a regular backup of your data to prevent any potential losses. Data security and integrity should always be a priority, especially when dealing with operating system updates that can directly affect the functioning of your computer.

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4 months ago

Excellent description of the problem. I, too, have faced the same issue. I do not run BitLocker–nor do I use the Windows Recovery system as I image my hard drive once or twice a month using Clonezilla, a free open-source tool that I’ve used successfully for years. After some doing, I found a Microsoft statement telling users to wait until they come up with a fix for their KB5034441 issue. So I’m not wasting my time worrying about this. Microsoft had an issue with an update a year or two ago, and they fixed it a month or two later. I recommend imaging a system disk on a regular basis. The should a problem arise, it’s simple to go back to the image.

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