How to Restart Isass.EXE
"lsass.exe" is a file on a Windows-based computer that helps to manage the user account where you are currently logged in. It authenticates the user account and helps load the correct files on screen. If you're currently experiencing problems with your user account, restarting lsass.exe can help correct that. Because this file is located in the "System32" folder, the process can be restarted directly from the Windows Task Manager.
Right-click the "Start" taskbar.
Click "Start Task Manager."
Click the "Processes" tab.
Click "lsass.exe" and click "End Process." Click "End Process" again to manually shut down lsass.exe on your computer.
Click the "Applications" tab, followed by "New Task." Type "lsass.exe" (without quotes) into the box and click "OK." This will restart lsass.exe on your computer.