Windows 10: REAGENTC.EXE: Unable to update Boot Configuration Data.

Discus and support REAGENTC.EXE: Unable to update Boot Configuration Data. in Windows 10 Gaming to solve the problem; I am unable to enable WindowsRE?... Discussion in 'Windows 10 Gaming' started by Lumince, Apr 19, 2023.

  1. Lumince Win User

    REAGENTC.EXE: Unable to update Boot Configuration Data.


    I am unable to enable WindowsRE?

    :)
     
    Lumince, Apr 19, 2023
    #1
  2. Ztruker Win User

    reagentc command - output not what I was expecting

    reagentc /info
    Windows Recovery Environment (Windows RE) and system reset configuration
    Information:

    Windows RE status: Disabled
    Windows RE location:
    Boot Configuration Data (BCD) identifier: 3b77bd07-e7cb-11e9-b6d5-cc1a1ad1e57d
    Recovery image location:
    Recovery image index: 0
    Custom image location:
    Custom image index: 0

    REAGENTC.EXE: Operation Successful.


    C:\Users\ztruk>reagentc /enable
    REAGENTC.EXE: Unable to update Boot Configuration Data.


    REAGENTC.EXE: Unable to update Boot Configuration Data. 267133d1581792061t-reagentc-command-output-not-what-i-expecting-image.png


    Is it supposed to be in C:\Windows\Recovery? Can I tell reagentc where it actually is?
     
    Ztruker, Apr 19, 2023
    #2
  3. 7Natives Win User
    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:

    REAGENTC.EXE: Unable to update Boot Configuration Data. 267169d1581805866t-reagentc-will-not-enable-advanced-startup-commandprompt.jpg


    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!
     
    7Natives, Apr 19, 2023
    #3
  4. cognus Win User

    REAGENTC.EXE: Unable to update Boot Configuration Data.

    Reagentc failed

    Shawn or other friend; in using MBR2GPT this am on a fresh install for which I used Win usb media - all of which went well, the conversion went well, but the edit to Reagentc failed. I thought, per the suggestion in the MBR2GPT.exe helps, to disable /enable but it all fails. Suggestion?

    paste:
    Code:
    REAGENTC.EXE: Unable to update Boot Configuration Data. 252973d1572470851t-reagentc-failed-screenshot1.png
     
    cognus, Apr 19, 2023
    #4
Thema:

REAGENTC.EXE: Unable to update Boot Configuration Data.

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