Windows 11 comes packed with powerful built-in security features to keep your system safe from viruses, malware, and online threats. One of these features is Local Security Protection (sometimes referred to as Local Security Authority or LSA protection). Enabling this option adds an extra layer of defense by safeguarding your login credentials and ensuring sensitive security processes can’t be tampered with by malicious software.
If you’re unsure how to turn it on, don’t worry—I’ve got you covered. This step-by-step guide will walk you through everything you need to know about enabling Local Security Protection in Windows 11.
What Is Local Security Protection in Windows 11?
Local Security Protection strengthens the Local Security Authority (LSA), which manages authentication and security tokens in Windows.
In simple terms, it:
- Protects stored passwords and credentials.
- Blocks malicious programs from accessing authentication data.
- Helps prevent identity theft and unauthorized logins.
Think of it like putting an armored lock on the door to your Windows security system.
Why Should You Enable Local Security Protection?
Here are a few reasons why turning on Local Security Protection is a smart move:
- Enhanced Protection: Keeps sensitive login details safe.
- Stops Credential Theft: Prevents hackers from stealing your saved passwords.
- Defends System Files: Stops malware from modifying critical security components.
- Peace of Mind: Adds another security shield on top of Windows Defender.
Method 1: Turn On Local Security Protection via Windows Security App
This is the easiest way for most users.
Step 1: Open Windows Security
- Press Windows + S and type Windows Security.
- Click to open the app.
Step 2: Go to Device Security
- In the sidebar, click Device Security.
Step 3: Enable Local Security Protection
- Under Core isolation, find Local Security Authority protection.
- Toggle the switch On.
Step 4: Restart Your PC
- A restart is required for changes to take effect.
Method 2: Enable Local Security Protection via Registry Editor (Advanced Users)
If the option is grayed out or missing, you can force-enable it through the Registry.
Step 1: Open Registry Editor
- Press Windows + R, type
regedit, and hit Enter.
Step 2: Navigate to the LSA Key
Go to:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
Step 3: Create/Modify the Key
- Find the value named RunAsPPL.
- If it doesn’t exist, right-click → New > DWORD (32-bit) Value → name it
RunAsPPL. - Set its value to 2.
Step 4: Restart Your PC
- Restart to apply the change.
Method 3: Use Group Policy Editor (Windows 11 Pro & Enterprise Only)
If you’re running Windows 11 Pro or Enterprise, you can use Group Policy.
Step 1: Open Group Policy Editor
- Press Windows + R, type
gpedit.msc, and hit Enter.
Step 2: Navigate to the Security Policy
Go to:
Computer Configuration > Windows Settings > Security Settings > Local Policies > Security Options
Step 3: Enable LSA Protection
- Find Configure LSASS to run as a protected process.
- Double-click it and select Enabled.
Step 4: Restart Your PC
- Reboot to activate the setting.
How to Check if Local Security Protection Is Enabled
After enabling, it’s good practice to verify.
- Press Windows + S and type System Information.
- Open the app and expand System Summary.
- Look for LSA Protection status—it should say Running.
What Happens If You Don’t Enable Local Security Protection?
Without it, your system is more vulnerable to:
- Credential dumping attacks (hackers stealing saved passwords).
- Malware modifying security processes.
- Unauthorized access to system tokens.
Basically, you’re leaving a window open for hackers to peek inside.
Potential Issues After Enabling LSA Protection
While it’s highly recommended, enabling Local Security Protection can sometimes cause:
- Older drivers not working properly (especially with outdated hardware).
- Third-party software compatibility issues.
- Longer boot times (in rare cases).
Tip: Always keep your drivers updated to minimize these issues.
How to Disable Local Security Protection (If Needed)
If you run into compatibility issues, you can turn it off:
- Go back to Windows Security > Device Security > Core isolation.
- Toggle Local Security Authority protection to Off.
- Restart your PC.
(Not recommended unless absolutely necessary.)
Tips for Stronger Security in Windows 11
Turning on Local Security Protection is a great step, but here are a few extra tips:
- Keep Windows Defender and virus definitions updated.
- Enable BitLocker for full-disk encryption.
- Use Windows Hello (PIN, fingerprint, or face unlock) for faster, safer logins.
- Avoid downloading apps from unknown sources.
Final Thoughts
Turning on Local Security Protection in Windows 11 is one of the best ways to safeguard your system against cyber threats. It strengthens the LSA process, making it harder for hackers and malware to steal sensitive data like login credentials.
Whether you use the Windows Security app, Registry Editor, or Group Policy, enabling it only takes a few minutes—and the extra protection is well worth it. Just remember to restart your PC after making changes.
FAQs
1. Is Local Security Protection available on all versions of Windows 11?
Yes, but the method to enable it may differ depending on whether you’re using Home, Pro, or Enterprise editions.
2. Will enabling LSA protection slow down my computer?
Not significantly. You may notice a slightly longer boot time, but performance impact is minimal.
3. Can I turn Local Security Protection off after enabling it?
Yes, you can disable it via Windows Security or Registry Editor, but it’s not recommended for security reasons.
4. Do I need antivirus if I enable Local Security Protection?
Yes—LSA protection helps secure credentials, but you still need antivirus like Windows Defender for overall protection.
5. Why don’t I see the option for Local Security Protection in Windows Security?
It may be hidden due to outdated updates. Make sure Windows is fully updated, or enable it manually via the Registry.