How to Fix Windows Update Error 0x80070643

Microsoft releases updates for Windows to add new features and fix bugs in the current version. Most updates download without problems, but some can cause errors during the download. One such error is Windows update error 0x80070643, which occurs while downloading the Windows 10 KB5034441 update.

Is Downloading the Windows 10 KB5034441 Update Important?

Microsoft released the KB5034441 update in January 2024. If your computer uses Windows Recovery Environment (WinRE), this update automatically applies the Safe OS Dynamic Update to address a security vulnerability. If left unpatched, attackers could exploit this vulnerability to bypass BitLocker encryption through WinRE.

That means there’s no question about downloading the KB5034441 update for Windows 10—it’s a crucial security fix, and it’s important to install it. However, there is a catch.

It turns out the error 0x80070643 occurs even on systems that lack a Recovery partition. The exact error is:

Microsoft has made it clear that if your system doesn’t have a Recovery partition, you don’t need to worry about the KB5034441 update, and you can safely ignore the 0x80070643 error. However, if your system does have a Recovery partition, the update is important, and unfortunately, Microsoft isn’t providing an automatic fix for the error.

When users first reported the issue, Microsoft acknowledged it and said they were working on a solution, but that hasn’t happened yet. They’ve since updated their blog, stating: “Automatic resolution of this issue won’t be available in a future Windows update. Manual steps are necessary to complete the installation of this update on devices experiencing this error.”

This means that the only way to resolve the problem is by following the manual fix provided by Microsoft, which involves resizing the Recovery partition.

What Is the WinRE Recovery Partition?

If you open the Disk Management tool on your computer, you’ll notice a section labeled “Recovery partition” next to the drive where your operating system is installed. But what is this Recovery partition exactly?

Windows Recovery Environment (WinRE) is a built-in Windows feature designed to help you recover your computer when it’s unable to boot due to issues like corruption, faulty updates, or accidental deletion of system files.

To check if the Recovery partition is set up correctly on your computer, open Command Prompt as an administrator, type reagentc /info, and press Enter. If “Enabled” appears next to the Windows RE status, it means your computer has a properly functioning Recovery partition.

To install the KB5034441 update, your Recovery partition needs at least 250 MB of free space. If there’s less than that, you’ll encounter the 0x80070643 error during the update.

Unlock powerful features with a genuine Windows 10 Pro Key – get the best deal at the lowest price today!