Ventoy verification failed: (15) access denied and verification failed: (0x1A) security violation are common boot errors. They block you from installing Windows 10/11 using Ventoy when booting into a USB flash drive. To solve your issue, here is a step-by-step guide from MiniTool to follow.

Ventoy Verification Failed

Ventoy, similar to Rufus, is a free tool to create a bootable USB drive or ISO files so that you can clean install Windows 10/11. Although your PC cannot meet the system requirements, the installation is feasible. Know details from this guide on Ventoy bypass Windows 11 Requirements.

It supports x86 Legacy BIOS, IA32 UEFI, x86_64 UEFI, ARM64 UEFI, MIPS64EL UEFI, and MBR and GPT partition styles. However, when booting your PC from the bootable USB drive, you get Ventoy verification failed errors.

On the computer, one of the error messages displays:

  • Verification failed: (15) Access Denied
  • Verification failed: (0x1A) Security Violation

When digging into the causes behind the boot errors, you will find they involve the enabled secure boot setting in BIOS, a Ventoy version issue, compatibility issues, and Ventoy configurations. In the event of Ventoy error 0x1A or error 15, calm down and continue reading this guide to discover possible solutions.

Tips:
To install Windows 10/11, you should make sure you have backed up your vital files and folders as the installation will erase your disk data. For safety, run backup software such as MiniTool ShadowMaker that devotes itself to backing up files, folders, disks, partitions, & Windows systems, as well as cloning a hard drive and syncing files & folders.

MiniTool ShadowMaker TrialClick to Download100%Clean & Safe

Fix 1: Disable Secure Boot

According to users on some forums, disabling secure boot in UEFI settings works well in fixing Ventoy verification failed issues.

To try this way:

Step 1: Boot your computer to its BIOS settings by pressing a key such as F2, Del, F10, Esc, etc. during the startup. The key varies from computer brands.

Step 2: Under the Security tab, highlight Secure Boot and set it to Disabled. This step may be different based on different PCs, so check for details as per your PC brand.

Later, reboot the machine from the bootable USB drive again and you can use Ventoy to begin installing Windows 11/10 without encountering verification failed: (15) access denied or verification failed: (0x1A) security violation.

Also read: How to Fix Ventoy Not Booting from USB? Here Are 4 Ways

Fix 2: Enroll Key or Hash from Disk

When having a Ventoy verification failed error, you can click OK and then press any key to perform MOK management to solve your issue. Ventoy offers two methods – Enroll key from disk and Enroll hash from disk to manage secure boot.

Enroll key or hash from disk Ventoy

Enroll Key from Disk

Step 1: After selecting Enroll key from disk, locate VTOYEFI and press Enter.

Step 2: Choose ENROLL_THIS_KEY_IN_MOKMANAGER.cer and press Enter.

Step 3: Select Continue > Yes > Reboot. Then, boot menu options will appear and you can proceed with the installation process, without any Ventoy verification failed error.

Enroll Hash from Disk

Step 1: Go to Enroll hash from disk > VTOYEFI > ENROLL_THIS_KEY_IN_MOKMANAGER.cer.

Step 2: Choose BOOT/ and press Enter.

Step 3: Select grubx64.efi to continue.

Step 4: Hit Continue > Yes > Reboot to go ahead with the installation.

Fix 3: Use Another Tool to Create a Bootable Drive

Some PCs may be not compatible with Ventoy Secure Boot, leading to Ventoy error 15 or error 0x1A. In this case, try running another tool like Rufus to create a bootable USB drive to install Windows 11/10.

Rufus Windows 11 Download & How to Use Rufus for a Bootable USB
Rufus Windows 11 Download & How to Use Rufus for a Bootable USB

How to use Rufus to create a bootable USB from ISO of Windows 11? Get Rufus Windows 11 download and follow the steps in this post for this task.

Read More

Step 1: Download and launch Rufus, then connect a USB drive to the PC.

Step 2: Choose a downloaded ISO file, configure some options, and click START to initialize the process.

If you don’t have ISO, you can download one using Rufus and make a bootable drive.

Tips:
Also, before using the Rufus bootable drive to install Windows 11/10, don’t forget to run MiniTool ShadowMaker to back up important files to avoid data loss.

MiniTool ShadowMaker TrialClick to Download100%Clean & Safe

The End

Are you striving to look for ways to solve Ventoy verification failed errors on Windows? Trying these three fixes can easily get you out of the hole. Follow the step-by-step guide!

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