Download:- Microsoft Security Essentials Removal Tool If you don’t use removal tool you might be facing the problem like: Computer freezing, Unable to connect internet, computer speed slow and also might be getting installation error.ĭownload the removal tool and uninstall it completely. If you try to uninstall itby add/remove program, it doesn’t remove it completely, because some of security registries entries might be still remains, which can be create problems. You should remove it by their proper MSE removal tool. Do you want to uninstall Microsoft security essential antivirus?