How to remove the s4tsr virus

Most antivirus programs identify s4tsr.exe as malware.

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

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S4tsr.exe file information

Windows Task Manager with s4tsr
S4tsr.exe process in Windows Task Manager

The file does not contain indication of the product name or copyright holder. In Windows Task Manager, it appears simply as S4TSR.EXE.

Description: S4tsr.exe is not essential for Windows and will often cause problems. S4tsr.exe is located in the C:\Windows folder. The file size on Windows 10/8/7/XP is 28,672 bytes. 
The program has no file description. The program has no visible window. S4tsr.exe is located in the Windows folder, but it is not a Windows core file. The application is loaded during the Windows boot process (see Registry key: MACHINE\Run). It is not a Windows system file. Therefore the technical security rating is 79% dangerous.

Recommended: Identify s4tsr.exe related errors

Important: You should check the s4tsr.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


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Best practices for resolving s4tsr issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active s4tsr process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the s4tsr.exe on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

Other processes

s4tsr.exe [all]