Windows 10: Can't get Reagentc to Enable despite going through all the necessary steps {KB5034441}

I'm trying to upgrade to windows 11. I went down the checklist and enabled Secure boot as well as TPM 2.0 in my computers BIOS and tried updating it gave me the 0x80070643 error code. Realized this is related to reagentc and followed a tutorial online to enable it. It doesn't matter what I do, reagentc won't enable. I've increased recovery partition size, given correct attributes, copied new winre.wim into system32 folder and pointed reagentc to the file: nothing. I've included my code log below so you can see what I've done so far. Saw someone on the forums say I need to go into diskpart, mou

:)

 

Stuck at Last Step for KB5028997 while troubleshooting Windows update (KB5034441) Error (0x80070643)

Hello Jonathan,

Thank you for your response however, the issue is not about installing windows update KB5034441 but the issue is realated to steps mentioned on KB5028997.

As you can see from the screenshot, I have followed all steps as mentioned on KB5028997 but I AM ATUCK AT THE LAST STEP which is command:

reagentc /enable.

After running the command "reagentc /enable" I get the message "The Windows RE image was not found".

Whereas before starting these steps, I checked that my "reagentc" was in enabled condition.

I hope now you are able to understand the issue and would be able to suggest steps to fix this.

Regards,

 

ReAgentC will not enable

Oh derp!

Copying the Recovery folder from a known-good-working computer and pasting it to the not-working computer does not work. C:\Windows\System32\Recovery\ReAgent_Merged.xml1 file is custom created on-the-fly for each machine.

1. Check to see if Windows\System32\Recovery\ folder exists;
   • if N skip to next step;
   • if Y rename it RecoveryBUP or something similar, then continue;
2. using 7-Zip or similar navigate the installation media to ...\Sources\ install.wim or install.esd
3. double-click either and go to ...\1\Windows\System32\
4. click the Recovery folder and tell 7-Zip to extract it to the target machine at C:\Windows\System32\;
5. reboot
6. Go to Settings > Update & Security > click Recovery in the left menu list;
7. under Advanced startup click Restart now
8. You should now see the full Recovery console like this:

MBR2GPT.EXE is a Microsoft program included free in Windows. If running Windows 10 v 1803 or later and the objective is to convert MBR to GPT with NO data loss, MBR2GPT.exe will do that. It is fast and works well. MS posted a video of it in use at their site. There is also an updated step-by-step tutorial at WindowsCentral with pictures. The steps follow:

In order to enable UEFI on a UEFI-able system that has been using BIOS because it was running Windows 7 or some such, the MBR (master boot record) first must be converted to GPT (GUID partition table):

• click Command Prompt in the Recovery Console to open an elevated command prompt without the Windows GUI;
• that should bring you to C:\Windows\System32;
• type MBR2GPT.exe /validate;
• type MBR2GPT.exe /convert and await the successful conversion;
  • there may be an error message about reagentc.exe, you can ignore that until after you change the CMOS/BIOS settings

now change BIOS to UEFI:

• reboot and tap F12 continuously before the Windows logo appears (or whatever key your device requires to enter the BIOS settings)
• change boot to UEFI from BIOS & reboot
• DONE

Now, ensure the Recovery console is as you want it...

1. In Windows launch an elevated command prompt and navigate to C:\Windows\System32
2. type reagentc /info and tap [enter], if disabled
3. type reagentc /enable and tap [enter]

RESOLVED & DONE with much thanks to SIW2 and NavyLCDR!

 

Issues with KB5034441 0x80070643

Try the following: Omit extending. Run

reagentc /disable

Delete partition 1.

Run

reagentc /enable

Run Windows Update. KB5034441 will install.

Run

reagentc /disable

again. Create a new partition 1.

Run

reagentc /enable

again.