What should I do if I get error 0x80070643 after updating KB5034122 and KB5034123 in win11/10?

php editor Zimo teaches you how to solve the problem of error 0x80070643 after updating KB5034122 and KB5034123 in win11/10. These two updates are patches for the operating system launched by Microsoft. If you encounter error code 0x80070643 during the installation process, it may be due to system file corruption or problems with the update program. Next, we will provide several solutions to help you complete the update smoothly.

Microsoft stated that the vulnerability tracking number is "CVE-2024-20666". An attacker can exploit this vulnerability to bypass BitLocker encryption and gain physical access to user devices.

However, some users have reported that due to insufficient WinRE partition size, the installation will fail and the "0x80070643 - ERROR_INSTALL_FAILURE" error message will pop up.

Aryeh Goretsky, Distinguished Researcher at ESET, said:

I can reproduce this issue on a Windows 10 virtual machine with a Windows recovery partition size of 511MB. I decided to increase it to 1024MB in case I need more space in the future. After that, the fix installed normally.

Microsoft officials have currently acknowledged this problem and provided a temporary solution. The official description is attached as follows:

It is necessary to increase the size of the WinRE partition to avoid this problem. problem and complete the installation. Please note that increasing the WinRE partition requires 250 MB of free space.

For guidance on changing the WinRE partition size, see KB5028997: Instructions for manually resizing a partition to install WinRE updates.

Microsoft said it is working on a solution and will provide the latest information in an upcoming release.

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