The file lssas.exe is technically termed as Local Security Authentication Server, or LSA Shell (Export Version), and a part of the program Microsoft Windows Operating System, which is developed by Microsoft Corporation. Local Security Authentication Server has the function to verify the validity of logons of a user to his or her Windows computer or server, and authenticate the process for the Winlogon service, through the performance of authentication packages, like the default msgina.dll file. Once the authentication is successful, Local Security Authentication Server, or lssas.exe generates the access token of the user, that is used to launch the initial shell, as well as other modules. So, what the lssas.exe file does is to validate all attempts to logon to the Windows computer or laptop of the user. It is definitely an essential process, especially that it is digitally signed by Microsoft Windows or Microsoft Corporation, so it must not be terminated, but continuously run in the background.
How can I stop lssas.exe and should I?
Most non-system processes that are running can be stopped because they are not involved in running your operating system. lssas.exe. is used by Microsoft Windows, If you shut down lssas.exe, it will likely start again at a later time either after you restart your computer or after an application start. To stop lssas.exe, permanently you need to uninstall the application that runs this process which in this case is Microsoft Windows, from your system.
After uninstalling applications it is a good idea to scan you Windows registry for any left over traces of applications. Registry Reviver by ReviverSoft is a great tool for doing this.
Is this a virus or other security concern?
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What is a process and how do they affect my computer?
A process usually a part of an installed application such as Microsoft Windows, or your operating system that is responsible for running in functions of that application. Some application require that they have processes running all the time so they can do things such as check for updates or notify you when you get an instant message. Some poorly written applications have many processes that run that may not be required and take up valuable processing power within your computer.
Is lssas.exe known to be bad for my computer's performance?
We have not received any complaint about this process having higher than normal impact on PC performance. If you have had bad experiences with it please let us know in a comment below and we will investigate it further.
What can I do if lssas.exe is causing errors on my computer?
The first thing you should do if lssas.exe. is causing errors on your computer is to run a Windows registry scan with Registry Reviver If you are still seeing errors after this you should uninstall the program that lssas.exe, belongs to, in this case Microsoft Windows