If you see error 0x80070643 in Windows 10, don’t worry, here’s how to fix it

This security update resolves a security vulnerability that could allow attackers to bypass BitLocker encryption using WinRE (KB5034441). The update automatically applies Secure Operating System Dynamic Update (KB5034232) to the Windows Recovery Environment.

A total of 250 MB of free space on the recovery partition is required for the update to install successfully. If there is not enough space, the following error will occur: 0x80070643: INSTALLATION_FAILURE_ERROR. We will explain in detail how to solve the problem.

Resize Partition in Windows

You should know that this is a somewhat long and tedious process to perform, plus you have to enter different commands. We will explain the whole process in detail so that you can carry it out successfully. The steps to modify WinRE are:

1. Type the term “command prompt” in Windows Search and run it as administrator.
2. Let’s check the status of WinRE, you need to enter this command: reagentc /info
   • The “Status” must be “Activated”
   • The location should be: ?GLOBALROOTdeviceharddisk0partition4RecoveryWindowsRE
3. To disable WinRE, enter the command: reagentc /disable
4. Now we will shrink the oper ating system partition and prepare it to extend the recovery partition. The process is as follows:
   1. We enter the command: disk part
   2. Now you need to use the command: disk list
   3. To select the operating system hard drive, we need to use the command: salt disc *number* [normalmente el disco duro del sistema operativo es el ‘Disco 0’]
   4. Now let’s see the partition of the operating system disk with this command: part of the list
   5. Now we need to select the “Recovery” partition and to do this we run this command: salt part *number* [es el número que aparece junto a la «Partición» que está catalogada como «Recuperación»]
   6. Run the command: desired shrinkage=250 minimum=250
   7. Again, enter the command: salt part *number* [es el número que aparece junto a la «Partición» que está catalogada como «Recuperación»]
   8. Finally, you need to delete the WinRE partition with this command: delete replaced partition
5. Now we move on to the process of creating a new recovery partition:
   1. Check if the disk partition style is GUID Partition Table (GPT) or Master Boot Record (MBR). To do this, run the command: disk list. Check for an asterisk
      • in the “Gpt” column. If there is an asterisk the unit is GPT. Otherwise, the drive is MBR.
      • If it appears as a GPT disk, enter this command: create a partition primary id=de94bba4-06d1-4d40-a16a-bfd50179d6ac followed by the command gpt attribute =0x8000000000000001
   2. If the drive is MBR, use the command: create primary partition id=27
   3. Now let’s format the partition like this: fast fs=ntfs label=”Windows RE Tools”
6. If the drive is MBR, you need to use this command: set id = 27
7. The next step is to confirm the WinRE partition, we will do this: flight list
8. Now we need to exit diskpart and we will do it with this command: exit
9. Next, we need to re-enable WinRE and we will do this: reactive / activate

reagentc /info