Consequently, users can’t boot from or utilize EFI USB drive devices because of that error. You can resolve the EFI USB device has been blocked error in Windows 11/10 with the solutions below.
How come the EFI USB device has been blocked error arises?
The EFI USB device has been blocked error message says that a security policy has blocked the drive. To be more specific, a secure boot feature blocks the drive. To fix the EFI USB device has been blocked error, you need to disable the Secure Boot feature. You’ll need to enter your PC’s BIOS (or UEFI firmware) from which you can disable that feature.
How can I fix the device has been blocked error in Windows 11?
1. Disable Secure Boot
1.1 Restart the UEFI Firmware settings
1.2 Disable the Secure Boot setting
Some users may need to set an admin password to change the Secure Boot setting. If that option isn’t accessible, try selecting the Set Administrator Password option within the BIOS first.
2. Reset BIOS to default settings
There aren’t many ways to fix the EFI USB device has been blocked error. However, the BIOS resolutions in this guide are widely confirmed to resolve that issue by users who have fixed it. Bear in mind that BIOS interface layouts vary. So, it might also be a good idea to look up how to disable Secure Boot and reset the BIOS within a manufacturer guide for your specific PC model. The manufacturer’s website for your PC model will likely include such guidelines. Because this issue appeared while trying to boot from a USB stick, here’s our guide on how to create a Windows 11 bootable USB drive. Did you manage to clear this problem? If you have any issues, feel free to use the comments section below.
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