Windows 11 includes several advanced security features designed to protect systems from modern cyber threats. One of the most important among them is Virtualization-Based Security (VBS). This feature uses hardware virtualization to create an isolated and secure environment within the operating system to protect critical processes and sensitive data.
Virtualization-Based Security helps prevent malicious software from accessing or modifying protected system components. By isolating certain security functions from the main operating system, VBS makes it much harder for attackers to compromise Windows.
If you want to understand what Virtualization-Based Security (VBS) is in Windows 11, the explanation below covers how it works and why it is important.
What Is Virtualization-Based Security (VBS)?
Virtualization-Based Security is a security architecture in Windows 11 that uses hardware virtualization technology to create a protected memory region separate from the main operating system.
In simple terms, Windows uses virtualization to create a secure virtual environment where sensitive operations and security services run independently from the rest of the system. Even if malware gains access to the operating system, it cannot easily access this protected area.
This isolation significantly improves the security of Windows systems.
How VBS Works in Windows 11
VBS relies on virtualization technology built into modern processors. When enabled, Windows uses a hypervisor (a virtualization layer) to isolate critical security components.
This isolated environment is often referred to as the Virtual Secure Mode (VSM).
Within this secure environment, Windows runs important security services that handle tasks such as:
- Protecting credentials
- Enforcing code integrity
- Securing sensitive system processes
Because these components run separately from the main operating system, attackers cannot easily access them.
Key Features of VBS
Virtualization-Based Security enables several important security features in Windows 11.
1. Memory Integrity (HVCI)
Memory Integrity, also called Hypervisor-Protected Code Integrity (HVCI), prevents malicious drivers or code from running in kernel mode.
It ensures that only trusted and verified code can run in critical parts of the operating system.
2. Credential Guard
Credential Guard protects login credentials stored in Windows.
It isolates credential data so that attackers cannot steal it using common techniques such as pass-the-hash attacks.
3. Secure Kernel Protection
VBS runs certain security services inside a secure kernel environment that is isolated from the regular Windows kernel.
This protects core operating system processes from tampering.
4. Application Guard Integration
VBS can also support features like Microsoft Defender Application Guard, which isolates untrusted websites or files inside secure containers.
This helps prevent malware from spreading to the main system.
System Requirements for VBS
Virtualization-Based Security requires certain hardware and system capabilities.
Typical requirements include:
- 64-bit CPU with virtualization support (Intel VT-x or AMD-V)
- Second Level Address Translation (SLAT)
- UEFI firmware with Secure Boot enabled
- TPM 2.0 support
- Windows 11 compatible hardware
Most modern PCs that support Windows 11 also support VBS.
Does VBS Affect Performance?
VBS improves security but may have a small impact on system performance.
In most everyday tasks, the impact is minimal. However, certain workloads such as:
- Gaming
- High-performance computing
- Virtual machines
may experience slightly reduced performance when VBS is enabled.
Because of this, some advanced users choose to disable VBS for performance-sensitive tasks.
Should You Keep VBS Enabled?
For most users, it is recommended to keep VBS enabled because it provides stronger protection against advanced attacks.
Organizations and enterprise environments especially benefit from VBS because it protects sensitive data and system credentials.
Disabling VBS may improve performance slightly but reduces system security.
Conclusion
Virtualization-Based Security (VBS) is a powerful security technology in Windows 11 that uses hardware virtualization to isolate critical system components from the rest of the operating system. By running sensitive security services in a protected environment, VBS helps defend against malware, credential theft, and other advanced threats.
With features such as Memory Integrity and Credential Guard, VBS plays an important role in strengthening Windows security. For most users and organizations, keeping VBS enabled provides better protection and helps maintain a secure computing environment.
