The Secure Boot feature prevented the operating system from starting.

Discussion in 'Parallels Desktop on a Mac with Apple silicon' started by MatthewW25, May 13, 2026 at 2:27 PM.

  1. MatthewW25

    MatthewW25

    Messages:
    1
    What do I need to do to fix this?


    "The Secure Boot feature prevented the operating system from starting.
    Secure Boot found unauthorised changes to the firmware, operating system, or UEFI drivers. To manage Secure Boot settings, go to the virtual machine configuration settings, click Hardware, and expand Advanced Settings."
     
    MatthewW25, May 13, 2026 at 2:27 PM
    #1
  2. ImraanN

    ImraanN Staff Member

    Messages:
    21
    Best Answer
    We observed that you encountered the error message "The Secure Boot Feature prevented the operating system from starting" when attempting to launch your virtual machine. This typically occurs when a recent Secure Boot certificate update hasn't yet been recognized by the virtual machine's older TPM (Trusted Platform Module) chip, a security component that verifies system integrity during startup.

    Important note about BitLocker: If your Windows virtual machine uses BitLocker encryption, please ensure you have your BitLocker recovery key readily available before proceeding. After applying either workaround below, Windows may prompt for this key during startup. To locate your recovery key, please see Find your BitLocker recovery key.


    Prerequisite: Before making any changes, we recommend creating a snapshot to preserve your current virtual machine state.

    Workaround: Remove and re-add the TPM chip

    1. Right-click the Parallels Desktop icon in your Mac dock and select "Control Center."
    2. Click the gear/cog icon next to your virtual machine.
    3. Select "Hardware."
    4. Click "TPM Chip" in the left sidebar.
    5. Click the "-" (minus) button at the bottom of the list to remove the TPM chip, then confirm by clicking "Remove."
    6. Start the virtual machine.
    7. Shut down the virtual machine completely.
    8. Return to "Hardware", click the "+" (plus) button, and select "TPM Chip" to re-add it.
    9. Close the configuration window and start the virtual machine again.

    For more information, visual guidance, and additional troubleshooting options, please see Fixing the error "The Secure Boot feature prevented the operating system from starting" when launching your Windows 11.
     
    ImraanN, May 15, 2026 at 1:45 PM
    #13
  3. Trishna Oobeyram

    Trishna Oobeyram Staff Member

    Messages:
    502
    Hello,
    We have created a support ticket to assist you further.
    Kindly check your email for future messages.
    Regards,
     
    Trishna Oobeyram, May 14, 2026 at 8:00 PM
    #2
  4. BrunoAlmeida

    BrunoAlmeida Bit poster

    Messages:
    1
    I'm having the same problem: after a Windows update, the virtual machine no longer starts. I looked for previous occurrences of this issue, and the recommendation was to disable and enable the TPM module, but in version 20 this option doesn't exist.
     
    BrunoAlmeida, May 14, 2026 at 8:24 PM
    #3
  5. LuyandaM

    LuyandaM Bit poster

    Messages:
    1
    Is support doing something about this? why are we not getting any response?
     
    LuyandaM, May 15, 2026 at 12:27 AM
    #4
  6. buraki

    buraki

    Messages:
    2
    Secure Boot found unauthorised changes to the firmware, operating system, or UEFI drivers. To manage Secure Boot settings, go to the virtual machine configuration settings, click Hardware, and expand Advanced Settings.

    Hi, I have the same problem. Can you please provide and assistant.

    Kind Regards,
     
    buraki, May 15, 2026 at 12:57 AM
    #5
  7. buraki

    buraki

    Messages:
    2
    upload_2026-5-15_9-58-8.png
     
    buraki, May 15, 2026 at 1:00 AM
    #6
  8. KarelH1

    KarelH1 Bit poster

    Messages:
    4
    I Have the same problem, any solution?
     
    KarelH1, May 15, 2026 at 1:31 AM
    #7
  9. GilbertM2

    GilbertM2 Bit poster

    Messages:
    3
    Judging by the number of entries, there is something very far wrong if Parallels cannot accommodate the most recent Windows update. The advice so far from Parallels is not clear. Please spell out how to fix the issue.
     
    GilbertM2, May 15, 2026 at 1:36 AM
    #8
  10. FabioA8

    FabioA8

    Messages:
    1
    FabioA8, May 15, 2026 at 3:16 AM
    #9
  11. PaulC71

    PaulC71

    Messages:
    2
    I have the same problem... is there any update to a solution?
     
    PaulC71, May 15, 2026 at 9:13 AM
    #10
  12. PaulC71

    PaulC71

    Messages:
    2
    I found a solution... if you search for "Fixing the error "The Secure Boot feature prevented the operating system from starting" when launching your Windows 11" there are detailed instructions on how to get around this problem. Hopefully this is corrected soon so we don't have to do a work around.
     
    PaulC71, May 15, 2026 at 9:57 AM
    #11
  13. GilbertM2

    GilbertM2 Bit poster

    Messages:
    3
    I have cracked it thanks to another post. Windows>Actions>Configure>Hardware Go to the bottom of the menu where there's a module like TPS (3 upper-case letters beginning with T, anyway). Click on that, then click the minus sign in the line below to remove it. The system then opens properly.
     
    GilbertM2, May 15, 2026 at 10:17 AM
    #12
  14. ImraanN

    ImraanN Staff Member

    Messages:
    21
    Best Answer
    We observed that you encountered the error message "The Secure Boot Feature prevented the operating system from starting" when attempting to launch your virtual machine. This typically occurs when a recent Secure Boot certificate update hasn't yet been recognized by the virtual machine's older TPM (Trusted Platform Module) chip, a security component that verifies system integrity during startup.

    Important note about BitLocker: If your Windows virtual machine uses BitLocker encryption, please ensure you have your BitLocker recovery key readily available before proceeding. After applying either workaround below, Windows may prompt for this key during startup. To locate your recovery key, please see Find your BitLocker recovery key.


    Prerequisite: Before making any changes, we recommend creating a snapshot to preserve your current virtual machine state.

    Workaround: Remove and re-add the TPM chip

    1. Right-click the Parallels Desktop icon in your Mac dock and select "Control Center."
    2. Click the gear/cog icon next to your virtual machine.
    3. Select "Hardware."
    4. Click "TPM Chip" in the left sidebar.
    5. Click the "-" (minus) button at the bottom of the list to remove the TPM chip, then confirm by clicking "Remove."
    6. Start the virtual machine.
    7. Shut down the virtual machine completely.
    8. Return to "Hardware", click the "+" (plus) button, and select "TPM Chip" to re-add it.
    9. Close the configuration window and start the virtual machine again.

    For more information, visual guidance, and additional troubleshooting options, please see Fixing the error "The Secure Boot feature prevented the operating system from starting" when launching your Windows 11.
     
    ImraanN, May 15, 2026 at 1:45 PM
    #13

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