How to resolve EFI USB Device has been blocked by the current security policy
This video shows how you can fix startup error with automatic repair problem in Windows10.
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Most probably the error Windows boot manager has been blocked by the current security policy occurs after the re-installation of new operating systems. And it is most commonly experienced by the Acer and Lenovo laptop users.
Basic Input Output System (BIOS) is the software which controls the computer's startup process. It essentially exists in every motherboard. Overtime a corrupted BIOS may be the reason behind this error. The BIOS can be corrupted due to many reasons. It can be either because of a bad update or due to a malware attack. Any boot error that occurs in your computer can be fixed by resetting the BIOS.
To reset BIOS,
1. Turn on the PC
2. Press F2 key immediately
3. Press F9 key to reset BIOS
4. Press F10 key to save and exit
This usually indicates a problem in the Unified Extensible Firmware Interface (UEFI). The UEFI is installed on all the new computers which intends to speed up the boot process. But the most important function of it is to provide a secure boot. For this purpose the UEFI performs a signature test. If the PC fails to pass this test the operating system will simply not load and display the error,
''Windows boot manager has been blocked by the current security policy''
Even after pressing Ok, the PC is going to restart and display the error again. By this way the UEFI can identify authorized operating systems. However there are numerous publicized solutions that you can try to overcome this error.
In this article, we will see the solutions for Fix Windows boot manager has been blocked by the current security policy. This can be tried for all the popular computer models.
Let's get started,
Method 1:
Method 2:
Method 3:
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