Fix Windows boot manager has been blocked by the current security policy

After reinstalling new operating systems, the error Windows boot manager has been blocked by the current security policy most likely happens. Also, people who use laptops made by Acer and Lenovo report experiencing it the most.

This typically points to a UEFI (Unified Extensible Firmware Interface) issue. All new computers come with the UEFI installed, which is designed to expedite the boot process. However, its primary purpose is to provide a secure boot. The UEFI runs a signature test in order to accomplish this. The operating system will simply not load and display the error if the PC does not pass this test.


''Windows boot manager has been blocked by the current security policy''

Even if you click "Ok," the computer will restart and show the problem once more. The UEFI is able to recognize approved operating systems in this manner. Nonetheless, you might attempt a number of well-known fixes to fix this problem.

We'll look at how to Fix Windows boot manager has been blocked by the current security policy in this article. You may test this on all the widely used computer models.

Now let's get started,

1. Reset BIOS

The computer's startup procedure is managed by the software known as the Basic Input Output System (BIOS). It is present on almost all motherboards. Over time, this error could be caused by a faulty BIOS.

 

There are numerous ways for the BIOS to become corrupted. Either a virus assault or a faulty update could be to blame. Your machine can be fixed from any boot issue by resetting the BIOS. 

To reset BIOS,

1. Turn on the computer
2. Quickly press the F2 key
3. To reset BIOS, use the F9 key
4. To save and exit, press the F10 key

2. Disable Secure Boot

Both the conventional BIOS and UEFI have the feature of secure boot. By preventing any dangerous apps from loading, it safeguards the PC's boot process. Boot loader replacement is a capability of malware, particularly rootkits. 

 

As a result, your operating system may load as a result without any warning. Preventive actions such as not loading them are taken by secure boot. However, by deactivating them, this feature—which is enabled by default—has been shown to resolve this problem.

 
To disable secure boot, 

 

1. Turn on the computer
2. Instantaneously press the F2 key 
3. Select the security/boot tab
4. Turn off secure boot
5. To save and exit, press the F10 key