Uploaded January 2024 | Updated September 2026, 3 weeks ago

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KB5034441 update for Windows 10, fix a security vulnerability that could allow attackers to bypass BitLocker encryption by using Windows Recovery Environment (WinRE). However, some users may not be able to install the update and may encounter an error "0x80070643 - ERROR_INSTALL_FAILURE" or " Windows Recovery Environment servicing failed. (CBS_E_INSUFFICIENT_DISK_SPACE)".

How to fix Windows 10 Update Error 0x80070643

As per Microsoft, this Windows 10 KB5034441 error 0x80070643 occurs, because computers might not have a recovery partition that is large enough to complete this update and causing the update for WinRE might fail. And Microsoft suggests manually resize your partition to install the WinRE update without any error.

Here is the link, Microsoft suggests how to manually resize your partition to install the WinRE update: support.microsoft.com/en-us/topic/kb5028997-instructions-to-manually-resize-your-partition-to-install-the-winre-update-400faa27-9343-461c-ada9-24c8229763bf

Note: Its recommended to backup your important data before make any changes or apply commands.

#windows10 #KB5034441 #0x80070643 #windowsupdate #windows #Microsoft