Core Isolation in Windows 11 learns how to speed up Windows 11

In this guide I explain what it is and how to configure the core isolation security function.

In this guide I am going to tell you everything about the core isolation function in Windows. First, I’ll tell you what it is and what it is for, and then how to configure it correctly on your computer. Get to know this system protection against external attacks in depth and discover why it is such an interesting approach. Do not miss it!

Index of contents

  • What is core isolation and what is it for?
  • How to enable or disable core isolation
  • Core isolation, enabled or disabled?

What is core isolation and what is it for?

Core isolation , also known as core isolation , is an advanced security feature built into Windows. Its main objective is to protect the kernel of the operating system by isolating it from the rest of the processes running on the machine. This approach helps prevent attacks and mitigate vulnerabilities by limiting unauthorized access to this very important part of the system, being the component that manages the most basic resources.

What happens when core isolation is activated ? Basically, a protected environment is created in which the operating system kernel runs. We are talking about a virtualized space that prevents the insertion of malicious code in the most sensitive area of ​​Windows (and any OS). Likewise, core isolation also makes use of hardware memory to store sensitive data more securely , thus reducing the path of any external attack.

To understand the scope of core isolation, I give you a very simple example. Suppose a user opens an email attachment that contains malware . Without kernel isolation, malware could exploit vulnerabilities in the operating system to gain access to the kernel and compromise the integrity of the entire computer.

However, with this security functionality activated, the malware would run in a virtualized environment and would not have direct access to the kernel, significantly limiting the damage caused.

How to enable or disable core isolation

Kernel isolation is controlled from the Windows Security application . This tool has a persistent icon, in the shape of a blue shield, in the system tray, at the far right of the taskbar. Of course, if you can’t find it, you can always use Windows Search (Windows key + S) to locate it.

Once you have run this utility, enter the Device Security section . You will see a section called Core isolation . You may see a message that says: “ Memory integrity is disabled. It is possible that the device is vulnerable .” That means it is necessary to activate all options related to core isolation . How to do it?

Simply click on Core Insulation Details . When you do this, the advanced options for this function appear on the screen.

When you are faced with them, press the slider to activate Memory Integrity . This will prevent malicious code from being inserted into highly secure processes, that is, those that are most critical and related to the system kernel.

Additionally, the Microsoft Vulnerable Driver Block List option is available . In the case of my test machine, it was enabled by default, something that was not the case with Memory Integrity . This last security feature is used to prevent drivers that have vulnerabilities from being executed.

Well, once you have enabled memory integrity, you will see a message asking you to restart your computer.

You will also notice that a notification appears in the lower right corner of the screen. There is a button that will allow you to restart the computer.

When the reset is complete, you’ll see a green confirmation icon appear next to Core Isolation in the Device Security app. This means that this feature is enabled on your device.

Now the system is better prepared to protect itself from possible attacks, because it is isolating the core, namely the main component that communicates the hardware and software of your PC.

Core isolation , enabled or disabled?

As we have seen, core isolation is a security measure that is worth activating, especially if you are looking for the greatest possible protection on your computer. However, despite its good intentions, this protection can have side effects on your computer . What do I mean?

Many users have found that, since they have activated this function, the FPS has decreased in games. There are also those who mention that their computer ‘s performance problems were solved after disabling core isolation .

Doing a little more research, I have found more related problems. For example, some say that a blue screen of death appeared when trying to activate core isolation. If any of what is explained here sounds familiar to you, then it is best to disable kernel isolation and its associated features in Windows Security.

So, doesn’t that mean that security will be less on the team? Applying the usual security measures, such as not downloading dangerous files , not accessing disreputable websites and maintaining the Windows Defender virus scanner should be enough to keep your computer safe.

Remember that, in most cases, the best antivirus is you and the prevention you apply when you browse the Internet. On the other hand, if when activating the core isolation function no failure is detected , it is interesting to keep it active to protect the equipment as much as possible.

And you, what core isolation configuration do you use? Do you leave it active? Have you had problems? Leave us your opinion in the comments and participate in our community.


by Abdullah Sam
I’m a teacher, researcher and writer. I write about study subjects to improve the learning of college and university students. I write top Quality study notes Mostly, Tech, Games, Education, And Solutions/Tips and Tricks. I am a person who helps students to acquire knowledge, competence or virtue.

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