How To Disable HVCI KMCi in Windows 11: A Comprehensive Step-by-Step Guide

Disabling HVCI and KMCI on Windows 11

If you’re trying to disable Hypervisor-Enforced Code Integrity (HVCI) and Kernel Mode Code Integrity (KMCI) on Windows 11, you probably know it’s not just a quick flip of a switch. These features are there to keep the bad stuff out, but sometimes they get in the way—like when an old app just won’t run correctly. Kind of annoying, right? Just remember that turning these off could open your system up to nastier threats, so proceed with caution.

Getting into Windows Security

First things first, you’ve gotta access Windows Security. Just hit the Start menu or press the Windows key, then start typing “Windows Security.” Click on it when it pops up. This is where the fun begins. You’ll see all sorts of security settings, including what you need to tweak, like device security settings—just don’t get overwhelmed.

Core Isolation Settings

Once you’re in, look for Device Security on the left sidebar. Click that, and then find the Core isolation section. Here’s where you can play with things like Memory Integrity, which is linked with HVCI. If you’re feeling adventurous, you can get there even faster:

• Hit Win + R to bring up the Run dialog.
• Type msconfig and press Enter.
• Head over to the Boot tab, and then click on Advanced options.
• Feel free to check or uncheck Disable driver signature enforcement—that’s also kind of related.

Turning Off Memory Integrity (HVCI)

Look for the toggle called Memory Integrity in the Core isolation settings. Flip that switch off. You’ll likely get a prompt—just confirm and you’re on your way. There’s another method if you prefer the techy route:

Set-ItemProperty -Path "HKLM:\System\CurrentControlSet\Control\DeviceGuard" -Name "EnableVirtualizationBasedSecurity" -Value 0

Just a heads-up, after making changes, sometimes a restart is needed for everything to kick in.

Keep in mind, disabling this is a bit of a gamble against harmful code, so unless you really need to, it might be best to leave it alone.

Disabling KMCI with Group Policy Editor

To tackle KMCI, you’ll need to dive into the Group Policy Editor. Press Win + R, type gpedit.msc, and hit Enter. Navigate through: Computer Configuration > Administrative Templates > System > Device Guard. There you’ll find the setting labeled Turn On Virtualization Based Security. Disable it by setting it to Not Configured or Disabled.

If command lines are more your thing, you can use:

dism /Online /Disable-Feature /FeatureName:VirtualizationBasedSecurity /Remove /NoRestart

And reboot after.

Impact of Disabling

So, turning off these protections means your device won’t enforce HVCI and KMCI anymore. This could lead to better compatibility for certain drivers or legacy software, which may have been throwing fits before. But remember, ignoring these protections can let malware slip in pretty easily. Always re-enable them when done, if you want to play it safe.

Quick Tips for HVCI and KMCI Management

Before making any changes, back up your important data. Seriously, messing with core security features could lead to a disaster. If you have to disable them, weigh the risks. And don’t forget to check if the apps or drivers have updates that make disabling unnecessary. Keeping an eye on security advisories is just smart—who wants to be the next headline?

Common Questions About Disabling HVCI and KMCI

Why disable these security features?

Usually, it’s about software compatibility. Some older programs or drivers just won’t work right with these features active. Sometimes developers recommend turning them off while they’re troubleshooting too.

Is it risky to turn them off?

Yeah, definitely. Disabling those protections leaves you open to malware and other threats, so tread carefully. Only do it if you’ve exhausted all other options.

Can I turn them back on later?

For sure. Just follow the same steps to re-enable them. If you need to reactivate Memory Integrity, just toggle it back in Windows Security > Device Security > Core isolation. Or use:

Set-ItemProperty -Path "HKLM:\System\CurrentControlSet\Control\DeviceGuard" -Name "EnableVirtualizationBasedSecurity" -Value 1

Does turning off HVCI improve performance?

Sometimes, especially on older systems, you might see a slight bump in speed. But honestly, the trade-off in security usually isn’t worth it.

What risks come with disabling?

You’re basically inviting malware and exploits in by turning off these features. Just know the stakes and make sure you’re protected with other security measures.

Handy Recap of Disabling

1. Open the Windows Security app.
2. Go to Device Security.
3. Disable Memory Integrity in Core Isolation.
4. Use the Group Policy Editor or dism command to handle KMCI.

Messing with these security settings can be a tricky game. They’re vital for keeping Windows 11 secure, so if you choose to disable them, just stay sharp and be ready to reactivate once you’ve completed your tasks. Keep an antivirus handy, update stuff regularly, and practice safe browsing. It’s all about striking that balance between security and getting things done. If any of this helps streamline setups for a few folks out there, mission accomplished.