Fixing the issue of local security authority protection not being registered:
Local Security Authority (LSA) protection ensures that only users can log into the local computer, preventing attackers from gaining access and safeguarding your computer from harmful logins.
It is essential to keep this setting enabled.
For some unknown reason, local security authority protection gets disabled, and when you try to enable it, it prompts for a restart. After restarting, if you check this setting again, you find that it is still disabled.
No matter how hard you try, you will encounter the error of local security authority protection not being registered every time.
Local security authority protection is not registered
How to enable local security authority protection on Windows 11 and Windows 10?
In this article, I will discuss some useful methods to enable local security authority protection on your Windows-based computer.
Method 1: Fixing with Outbyte PC Repair Tool
There may be some misconfiguration issues in the system, such as corrupted system files, registry errors, outdated drivers, disabled programs, etc., that cause problems and prevent you from enabling local security authority protection.
The Outbyte PC Repair Tool scans your computer for issues and fixes them, providing you with an error-free computing environment.
Windows consists of a large number of dll files, exe files, sys files, various types of services, databases, and so on, making it impossible to constantly monitor all files. This excellent PC optimization tool repairs damages, fixes errors, updates Windows and drivers, and quietly removes various types of bugs.
The Outbyte PC Repair Tool performs all the above tasks effortlessly, giving you a smooth and error-free Windows environment so you can focus solely on your work.
3 steps to fix this error
Step 1. Download the Outbyte PC Repair Tool [File size: 16.4 MB]
Step 2. Scan your Windows computer
Step 3. Click the "Repair" button to fix the error
Method 2: Fixing with Windows Update
This is similar to a security error on Windows computers; wait for urgent fixes that may come with the next Windows Update. Keep downloading and installing the latest Windows updates to fix this issue, and also update old drivers and applications.
Method 3: Enabling local security authority protection in Core Isolation settings.
Let's try to enable this setting using the Core Isolation window.
Step 1: Open Windows Security. Go to Settings ← Privacy & security ← Windows Security.
Step 2: Click on Device security and open it.

Open Device Security
Step 3: Click on Core isolation details and open it.

Open Core Isolation Settings
Step 4: Turn on local security authority protection.

Enable Local Security Authority
Method 4: Fixing with the Registry File
If local security authority protection is disabled, you can enable it via the registry file. It is recommended to back up the registry editor and keep it on an external device before making any edits.
Step 1: Open the Registry Editor. Press Windows + R to open the Run command, type regedit, and then click OK.

Open Registry Editor in Windows 10 and 11
Step 2: Navigate to the following location
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
Step 3: On the right side, look for the entry named RunAsPPL. If you don’t find it, create a DWORD (32-bit) entry with that name.

Edit the RunAsPPL Registry Key
Step 4: Double-click on RunAsPPL and set the value to 1.

set_runasppl_value_1
Step 5: Exit the Registry Editor and restart your computer.
Method 5: Fixing with PowerShell
Run the following command in Windows PowerShell to enable local security authority protection on Windows 8/10/11.
Step 1: Open Windows PowerShell. Click on the Start menu, search for PowerShell, and open it as an administrator.

windows_powershell
Step 2: Execute the following command step by step.
reg add HKLM\SYSTEM\CurrentControlSet\Control\Lsa /v RunAsPPL /t REG_DWORD /d 2 /f
reg add HKLM\SYSTEM\CurrentControlSet\Control\Lsa /v RunAsPPLBoot /t REG_DWORD /d 2 /f
Step 3: After executing the command, exit PowerShell and restart your computer.
Method 6: Repairing your computer using SFC.exe, DISM, and CHKDSK commands.
Step 1: Open Command Prompt as an administrator.

Open Command Prompt as Administrator in Windows 8, 10, and 11
Step 2: Now run the following commands one by one.
1. System File Checker tool
sfc /scannow
2. Run the DISM command
Dism /Online /Cleanup-Image /CheckHealth
Dism /Online /Cleanup-Image /ScanHealth
Dism /Online /Cleanup-Image /RestoreHealth
3. Run the disk checking utility.
chkdsk /f c:
Method 7: Enabling it by editing Group Policy
You also need to enable "Configure LSASS to run as a protected process" in the Group Policy Editor.
Step 1: Click on the Start menu, search for "Group Policy," and open "Edit Group Policy."

search_group_policy
Step 2: Navigate to the following location:
Local Computer Policy ➜ Computer Configuration ➜ Administrative Templates ➜ System ➜ Local Security Authority.
Step 3: Double-click on "Configure LSASS to run as a protected process."

Edit_group_policy
Step 4: Enable the setting and turn it on using UEFI lock in the options box.

save_group_policy_settings
Step 5: Click "Apply" and "OK" to save the settings.
Step 6: Restart your computer to apply the changes.
Conclusion
In this article, we discussed how to fix the warning of local security authority protection being disabled.
You may find that the local security authority protection setting is turned off for no apparent reason. There are some solutions outlined in this article that will help you fix the error of local security authority protection not being registered.



