S4tsr.exe is developed by S4TSR.EXE. It’s a hidden file. S4tsr.exe is usually located in the %WINDOWS% folder and its usual size is 28,672 bytes.
Disable and delete the s4tsr.exe process as soon as possible. Most likely it is a virus, a trojan, or some other malware.
Before disabling this file make sure it is not a legitimate file that is also called s4tsr.exe.
Author: S4TSR.EXECommon path(s): %WINDOWS%Keywords(s): hiddenFilesize(s): 28,672 bytes