HomeGame GuidesMicrosoft publishes requirements for KB5034441/KB5034440 updates that cause error "0x80070643"

Microsoft publishes requirements for KB5034441/KB5034440 updates that cause error “0x80070643”

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Microsoft earlier this week released the July 2024 patch updates for Windows 10 (KB5040427 / KB5040430 / KB5040434 / KB5040448), Windows 11 21H2 / 22H2 / 23H2 (KB5040442 / KB5040442 / KB50404 5040 442 / KB50401 52401 and Windows 5040434). This for Windows 11 fixes a broken taskbar.

Apart from these, Microsoft has also quietly rolled out an update to a major issue that has been plaguing Windows 10 and 11 users for a long time. The company has issued Windows Recovery Environment (WinRE) updates KB5034441 (on Windows 10) and KB5034440 (on Windows 11) to address the CVE-2024-20666 Secure Boot Bypass vulnerability. These are different from Microsoft’s WinRE update released earlier this week for Windows 11 24H2 under KB5041137.

However, this would lead to the error message “0x80070643 – ERROR_INSTALL_FAILURE” and from time to time, the company updated it. In March, it released a revamped PowerShell script and added that users without a WinRE partition don’t need the update.

In May, Microsoft acknowledged that automatic patching is not possible for this and users will have to update it manually.

Now the company has updated it again and published a detailed step-by-step guide on how to determine if a user needs an update.

KB5034440: Windows Recovery Environment update for Windows 11, version 21H2

It is important This update is not required and will not be offered if the Windows Recovery Environment (WinRE) meets one of the following conditions:

  • If the WinRE recovery partition does not have enough free space.
  • If the WinRE recovery partition was manually updated using procedure b Add an update package to Windows RE And it is already updated.
  • If the WinRE image has a version greater than or equal to the version 10.0.22000.2710. To determine the version of your WinRE image, check the WinREVersion The registry entry in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion.
  • If your running computer does not have a WinRE recovery partition. To verify if you have WinRE running, run the following command at an elevated command prompt: reagentc /info. If WinRE is enabled, you will see Windows RE mode in the output with a value of activated. In this scenario, this update may be required.

KB5034441: Windows Recovery Environment update for Windows 10, version 21H2 and 22H2

It is important This update is not required and will not be offered if the Windows Recovery Environment (WinRE) meets one of the following conditions:

  • If the WinRE recovery partition does not have enough free space.
  • If the WinRE recovery partition was manually updated using procedure b Add an update package to Windows RE And it is already updated.
  • If the WinRE image has a version greater than or equal to the version 10.0.19041.3920. To determine the version of your WinRE image, check the WinREVersion The registry entry in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion.
  • If your running computer does not have a WinRE recovery partition. To verify if you have WinRE running, run the following command at an elevated command prompt: reagentc /info. If WinRE is enabled, you will see Windows RE mode in the output with a value of activated. In this scenario, this update may be required.

Also added a separate note that talks about increasing the free space size of the recovery partition by the 250 MB needed to install the update:

Note This update requires 250 MB of free space on the recovery partition to install successfully.

If you want to make sure your device is offered this update, please follow the instructions to manually resize your partition or use the sample script to increase the size of the WinRE recovery partition.

Once your partition has enough disk space, click Start > Settings > Windows Update > Check for updates Offer you the update and then install it.

You may find more details on the official Microsoft support documents linked below in the source.

Source: Microsoft (1, 2)

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