Windows 10 Update Error(0x80070643)

Hi all,

A fix is in the works.

https://learn.microsoft.com/en-us/windows/release-health/status-windows-10-21H2#3231msgdesc 

Devices attempting to install the January 2024 Windows Recovery Environment update ( KB5034441) might display an error related to the size of the Recovery Environment's partition. The Windows Recovery Environment (WinRE) is used to repair or recover from issues affecting Windows.

Resulting from this error, the following message might be displayed.

"0x80070643 - ERROR_INSTALL_FAILURE"

Workaround: It might be necessary to increase the size of the WinRE partition in order to avoid this issue and complete the installation. Note that 250 megabytes of free space is required in the recovery partition. Guidance to change the WinRE partition size can be found in KB5028997: Instructions to manually resize your partition to install the WinRE update.

Next steps: We are working on a resolution and will provide an update in an upcoming release.

Affected platforms:

Client: Windows 11, version 21H2; Windows 10, version 22H2; Windows 10, version 21H2

Server: Windows Server 2022

Edit:26/02/2024

Fix error 0x80070643 for Windows 10 KB5034441 update - Your Windows Guide

Microsoft has provided a script fix mentioned here in detail on how to run a script that increases the size of the WinRE partition.

#1

In the Windows search,

Search for Windows Powershell, right-click it and choose run as administrator.

Next, execute this command:

set-executionpolicy remotesigned

Afterwards, select Yes to All when prompted. Keep the Window open.

#2

Download this script.

https://ywg2216-my.sharepoint.com/:u:/g/personal/sumit_sumitdh_com/EZl7EZYIO7ZIh3sekEg3b7gBpng2Rorpmgh8B7EtlV-PZg?e=CU642G

Make two folders on your C drive root, with names 1 and 2, so their paths are as follows:

C:\1

C:\2

Paste the script file you downloaded into folder 1.

In the Powershell window, navigate to the C drive folder and enter this command:

cd C:\1

This will ensure the folder which contains the script is selected. Now, we need to run the script, which increases the size of WinRE. For that, run the following command:

.\1.ps1

After that, press Y to confirm running the script.

Update: Microsoft is working on a fix. Until then, you may ignore the Windows Update error 0x80070643 and wait for an official fix.

• Source: Windows 11 known issues and notifications | Microsoft Learn

Important: Follow the workaround only if you're comfortable with the diskpart console tool because it can be a risky procedure. Otherwise, please start a new thread and seek the assistance of an IA or moderator.

Workaround: Resizing the Recovery partition to 750 MB or more will fix the issue. The error occurs due to a lack of free disk space in the Recovery partition.

KB5028997: Instructions to manually resize your partition to install the WinRE update - Microsoft Support: https://support.microsoft.com/en-us/topic/kb5028997-instructions-to-manually-resize-your-partition-to-install-the-winre-update-400faa27-9343-461c-ada9-24c8229763bf

Caveat: The above Microsoft article assumes the Recovery partition is situated next to the OS partition. That's not necessarily the case in many systems. So, a different approach has to be followed on systems where the Recovery partition is not located near the OS partition. In that case, please start a new thread and seek the assistance of an advisor or volunteer moderator.