Lsass Exe An Invalid Parameter - Errors Repairing Tool !Author: Matt Terkovsky Problems with your computer are never a welcome occurrence, and the sudden display of an "lsass exe an invalid parameter…" error can leave you confused; but spend a couple of minutes with this short guide, and You'll explore a simple technique that should give you the capability to stop these problems from occurring. In a lot of occurrences, these error messages are a result of problems with the registry - this is the application which allows windows to track the various software and peripherals when you do installations, deinstallations, or updates on your pc. As you use your computer more and more, and keep adding more programs, it's quite normal to run across an incorrect installation or removal of software; this can have the effect of having an "lsass exe an invalid parameter…" error, decreased speed and performance, and other troubles of this nature.