For some users, your PC freeze accidentally in Windows 10. And when you open Task Manager, only to find that there is a process called Local security authority process (lsass.exe) which stopped working and used a lot of your CPU and disk.
Here, in order to resolve Lsass.exe high CPU usage in Windows 10, you could also go ahead to take a closer look at this Lsass.exe high CPU or disk usage issue.
What is the Lsass.exe process in Windows 10?
This LSASS is short for Local Security Authorization Subsystem Service or LSA Shell, which is primarily used to implement security policy for Windows systems. It is a kind of system process that manages your passwords if you log in to Windows 10.
In a nutshell, this Lsass.exe process identifies user accounts on your system, configures password changes, creates access tokens, and writes to the Windows security log, etc.
Why does Lsass.exe have high CPU and disk usage in Windows 10?
As suggested to you, this Local Security Authorization Subsystem Service is responsible for Windows password changes.
While in case you find that there are two processes named LSASS.exe in the Task Manager in different locations, these may be the reasons why Windows processes the Local Security Authorization Subsystem Service using a lot of CPU or disk. In other words, it means that your PC meets certain viruses or threats in Windows 10.
And normally, the Lsass.exe is located in C:WindowsSystem but if you find it somewhere else with the same name, then it’s about time you manage to deal with Local Security Authorization Subsystem Service using CPU or memory usage. .
Here, if you come across the LSASS.exe terminated error, then maybe your accounts on the Windows screen have been lost and Windows 10 needs to be restarted. In a sense, it can be caused by the problematic system files and malware on your PC.
And when you come across the problem that Local Security Authorization Subsystem Service has stopped, Windows system will show you an error message like below:
System is shutting down. Save all work in progress and log out. Any unsaved changes will be lost. This shutdown was initiated by NT AUTHORITY SYSTEM. Shutdown will begin in 60 seconds. Shutdown Message: The system process “C:WINDOWSsystem32lsass.exe” terminated unexpectedly with status code – 999. The system will now shutdown and reboot.
Is Lsass.exe safe?
By default, it is safe in Windows 10. But with the passage of time, as one of the executable files in Windows system, Lsass.exe may encounter viruses and threats and be disguised by malicious programs.
That is why some of you will find two Lsass.exe files with different locations.
Once you find that there are two same LSASS files in Windows 10, it is time to remove Lsass.exe error for your PC.
Can Lsass.exe be removed in Windows 10?
Even if the Local Security Authorization Subsystem Service appears in Task Manager under the guise of the threatening program, it is not advisable for you to choose to uninstall it from Windows 10, as it is on the system responsible for Windows security policies.
The moment you stumble across a CPU or disk with Lsass.exe in Windows 10, what you really need to do is take steps to fix this Lsass.exe system error.
How to fix Lsass.exe and high CPU and disk usage error in Windows 10?
In some cases, the Windows process Lsass.exe stops and uses high CPU and disk at the same time.
Whatever your situation is, this process ends suddenly or your CPU or disk usage is exhausted, to get rid of this Lsass.exe causing high CPU, you should mainly make sure that there is no malware causing this error.
After that, you should take advantage of Active Directory Data Collector to troubleshoot Lsass.exe high CPU usage issues.
Solution 1 – Run SFC in safe mode
The problematic software is said to be the culprit behind Lsass.exe high CPU usage system problem. Now that this issue is over because the Local Security Authorization Subsystem Service would automatically reboot your PC, why not enter safe mode to allow the computer to run in a minimum set of programs to search for software in Windows 10?
Here to activate System File Checker, you are supposed to enter safe mode with command prompt .
1. Click on the key of combination shift and Restart until the list of options appears.
2. Then go to Solve problems > Advanced Options > Start Settings .
3. In the boot configuration, press F6 to enter the safe mode with command prompt .
4. Then in the symbol of the system elevated, enter the command sfc /scannow and later press enter to run this command.
Once SFC finished scanning, you can know exactly what is leading to Lsass.exe high CPU or memory error in Windows 10.
It is up to you whether to uninstall the erroneous software in Control Panel or try the next method.
Solution 2: Run the Performance Monitor Active Directory Data Collector
In terms of Lsass.exe using a lot of CPU, in addition to determining what it does, you can also manage the Active Directory Data Collector, which in other words can be called Active Directory Diagnostics .
What is Active Directory Diagnostics?
In short, this AD (Active Directory) data collector will collect the PC performance diagnostic reports.
In this way, you can also launch this tool to fix Local Security Authorization Subsystem Service high CPU and disk usage issues and ending unexpectedly error in Windows 10.
1. Press Windows + R to open the box Run and then write Perfmon.msc in the frame. Once this is done, do click on To accept for him performance monitoring .
2. In the performance monitoring in the left pane, Performance > Data collector sets > System .
3. in System, in the left pane, in the right pane find and right-click System Diagnostics for start it .
4. You can see that the Diagnostics the system It will take approximately 5 minutes to collect Windows 10 performance data.
5. Once the diagnostic is complete, the performance reports will appear in Reports > System > System Diagnostics .
6. Go to System Diagnostics to see what is negatively affecting performance in Windows 10.
The cause of the Windows Lsass.exe process error is likely to appear, therefore you may get the high CPU with the Local Security Authorization Subsystem Service removed.
In short, when you are faced with Lsass.exe terminated error and high CPU or disk usage in Windows 10, the main solution is to make sure that there is no malware. Ideally, safe mode can be a good circumstance where you fix this Local Security Authorization Subsystem system error.