How to Fix Local Security Authority Process high CPU Windows 11 [Steps]

Tips to fix Local Security Authority Process high CPU Windows 11:

In this article, we are going to discuss on How to fix Local Security Authority Process high CPU Windows 11. You will be guided with easy steps/methods to resolve the issue. Let’s starts the discussion.

‘Local Security Authority Process high CPU usage issue in Windows 11’:

‘Local Security Authority Process’: Local Security Authority Process or Local Security Authority Server Service or Local Security Authority SubSystem service (LSASS.exe) is process in Microsoft Windows Operating systems that are responsible for enforcing the security policy on the system. It verifies users logging on to Windows computer or server, handles password changes and creates access tokens.

However, several users reported they faced Local Security Authority Process high CPU Windows 11 or Local Security Authority Process high CPU usage issue on their Windows 11 computer. When you open Task Manager app in Windows PC in order to check which program/process is draining your system resources, you may experience Local Security Authority Process (LSASS.exe) is showing higher percentage under CPU usage section in Task Manager and is causing system performance slowdown issue.

The possible reasons behind the issue can be the corruption in system files or registry, malware or viruses infections in computer, interference of other third-party conflicting software, and other Windows issues. Malware programmers or cybercriminals also uses ‘LSASS.exe’ process name for malicious purposes and can replace the original LSASS.exe (Local Security Authority Process) with the malicious one without your knowledge.

If you are not aware, the original lsass.exe file (Local Security Authority Process executable) is located in ‘C:\Windows\System32’ when C: is your system partition. So, if the process with similar name is running in Task Manager but with different file location, chances it is virus and is exploiting the security on computer. In such case, you can try to fix the issue by removing all types of malware or viruses from computer. Let’s go for the solution.

How to fix Local Security Authority Process high CPU Windows 11?

Method 1: Fix ‘Local Security Authority Process high CPU’ with ‘PC Repair Tool’

‘PC Repair Tool’ is easy & quick way to find and fix BSOD errors, DLL errors, EXE errors, problems with programs/applications, malware or viruses infections in computer, system files or registry issues and other system issues with just few clicks.

Method 2: Run SFC scan

You can run SFC scan in computer to repair corruption in system files and fix the issue.

Step 1: Type ‘cmd’ in Windows Search Box and press ‘SHIFT + ENTER’ keys on keyboard to open ‘Command Prompt as Administrator’

Step 2: Type ‘sfc /scannow’ command and hit ‘Enter’ key to execute. Once executed, restart your computer and check if the issue is resolved.

Method 3: Use Performance Monitor’s Active Directory Data Collector

This method will work only on recent Windows Server versions. You can use Performance Monitor’s Active Directory Data Collector set on computer to fix.

Step 1: Press ‘Windows + R’ keys on keyboard, type ‘perform.msc’ in ‘Run’ window and hit ‘Performance Montero’ app

Step 2: In left pane, go to ‘Diagnostics > Reliability, and Performance > Data Collector Sets > System’

Step 3: Right-click on ‘Active Directory Diagnostics’ and then select ‘Start’ in context menu. It will take about 300 seconds or 5 minutes depending upon he perform capabilities of your hardware to collect the required data and will take some additional time to compile the report.

Step 4: Once compiled, you can see the report under ‘Diagnostics > Reliability and Performance > Reports > System > Active Directory Diagnostics’. The report contains all information and conclusions in the report. It will help you investigate the real cause of issue so you can fix it.

Method 4: Perform Clean Boot

You can perform Clean Boot in computer in order to start your computer with minimal startup items and services, in order to fix the issue.

Step 1: Open ‘System Configuration’ app in Windows PC via Windows Search Box

Step 2: Click ‘Services’ tab, tick ‘Hide all Microsoft Services’ checkbox and hit ‘Disable All’ button

Step 3: Now, click ‘Startup’ tab, click ‘Open Task Manager’, right-click on each startup items in Task Manager, and select ‘Disable’ to disable them and then close Task Manager.

Step 4: Finally, click ‘Apply > Ok’ button to save the changes and check if the issue is resolved.

Method 5: Perform System Restore

If the issue is still persist, you can perform System Restore in computer in order to fix.

Step 1: Press ‘Windows + R’ keys on keyboard, type ‘rstrui’ in ‘Run’ window and hit ‘Ok’ button to open ‘System Restore’ app

Step 2: Click ‘Next’, select the valid restore point according to date & time when there was no issue at all in computer, and then click ‘Next > Finish’ to start restoring process and once done, restart your computer and check if the issue is resolved.

Conclusion

I am sure this article helped you on How to fix Local Security Authority Process high CPU Windows 11 with easy ways. You can read & follow our instructions to do so. That’s all. For any suggestions or queries, please write on comment box below.