pls help..

Discussion in 'Installation and Configuration of Parallels Desktop' started by RadoslavV1, Jan 27, 2022.

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  1. zeroh1

    zeroh1

    Messages:
    2
    非常感谢，你真的帮了我大忙！
     
    zeroh1, May 13, 2026 at 8:09 AM
    #21
  2. DanaA1

    DanaA1 Bit poster

    Messages:
    3
    Had the same issue today as well. Worked through all options I could find online to no avail. I then sent a request to Support for help but have not heard back. In the meantime, I decided to try a solution through ChatGPT and it worked perfectly. Windows came back up, did two upgrades, and then asked me to recreate my PIN. After that, it all was good. Hope this helps anyone else who get the "Secure Boot found unauthorized 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."
     

    Attached Files:

    DanaA1, May 13, 2026 at 2:35 PM
    #22
  3. Sebastian22

    Sebastian22

    Messages:
    1
    Thank you very much, VM (W11) is working again in my MacBook M4
     
    Sebastian22, May 13, 2026 at 8:07 PM
    #23
  4. DanaA1

    DanaA1 Bit poster

    Messages:
    3
    I am experiencing an issue with Parallels Desktop on my Mac.

    My virtual machine running Windows 11 was working normally until yesterday. However, today it fails to start and shows the following error:

    "The Secure Boot feature prevented the operating system from starting. The Secure Boot policy settings in the firmware could not authenticate the code. Check the Secure Boot policy in Setup."

    I did not make any manual changes to the virtual machine configuration. The issue appeared अचानक (possibly after an update or system restart).

    I have checked the VM configuration, but I cannot find or modify the Secure Boot setting.

    Could you please assist in resolving this issue?

    Thank you.[/QUOTE]
     
    DanaA1, May 14, 2026 at 1:30 PM
    #24
  5. KarelH1

    KarelH1 Bit poster

    Messages:
    4
    Hello, I have the same problem, Parallels 26 and Win 11
     
    KarelH1, May 15, 2026 at 1:06 AM
    #25
  6. KarelH1

    KarelH1 Bit poster

    Messages:
    4
    Hello, does it really work? I have Parallels 2026 and Win 11, MacBook. Thank you
     
    KarelH1, May 15, 2026 at 1:12 AM
    #26
  7. GabrielL4

    GabrielL4 Bit poster

    Messages:
    6
    [/QUOTE]


    See my answer on the previous page
     
    GabrielL4, May 15, 2026 at 2:46 AM
    #27
  8. GabrielL4

    GabrielL4 Bit poster

    Messages:
    6
    consider renaming the thread with a more descriptive title than "pls help", something that helps other people find it ("The Secure Boot feature prevented the operating system from starting")
     
    GabrielL4, May 15, 2026 at 7:15 AM
    #28
  9. KarelH1

    KarelH1 Bit poster

    Messages:
    4
    I don't have a bit locker key in my Microsoft account, so I m scared to erase the TPM chip
     
    KarelH1, May 15, 2026 at 8:09 AM
    #29
  10. 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 1:44 PM
    #30
  11. DanaA1

    DanaA1 Bit poster

    Messages:
    3
    This does not work as there is no option to "Remove" under the TPM chip.

    Here is how I resolved the issue:
    Step 1 -- Shut Down the Virtual Machine
    In Parallels, go to the top Mac menu bar:
    Virtual Machine → Stop
    Choose "Shut Down."
    Wait until the VM is completely stopped.

    Step 2 -- Show the VM in Finder
    In Parallels Control Center:
    • Right-click the Windows 11 VM
    • Choose "Show in Finder"

    Step 3 -- Duplicate the VM (Backup)
    In Finder:
    • Locate the Windows 11.pvm file
    • Right-click it
    • Choose "Duplicate"

    This creates a full backup before making changes.

    Step 4 -- Open the VM Package
    Right-click the original Windows 11.pvm file and choose:
    "Show Package Contents"

    Step 5 -- Delete the NVRAM Files
    Inside the package contents, move ONLY these files to the Trash:

    • NVRAM.dat
    • NVRAM.tnvs

    DO NOT delete any other files.

    Step 6 -- Restart Everything
    • Quit Parallels completely
    • Restart your Mac
    • Open Parallels again
    • Start the Windows 11 VM

    What This Fix Does
    Deleting the NVRAM files forces Parallels to recreate the virtual firmware and Secure Boot security data.
     
    DanaA1, May 15, 2026 at 3:17 PM
    #31
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