How to remove the sema_service virus

Most antivirus programs identify sema_service.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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Sema_service.exe file information

Windows Task Manager with sema_service
Sema_service.exe process in Windows Task Manager

More precise details about what the sema_service.exe process belongs to are not available. This is partly because the author is not identified.

Description: Sema_service.exe is not essential for Windows and will often cause problems. The file sema_service.exe is located in a subfolder of C:\Windows. Known file sizes on Windows 10/8/7/XP are 331,776 bytes (71% of all occurrences), 303,104 bytes or 345,088 bytes. 
The sema_service.exe file is a file with no information about its developer. The program has no visible window. The file is located in the Windows folder, but it is not a Windows core file. The file is not a Windows core file. Therefore the technical security rating is 72% dangerous.

Recommended: Identify sema_service.exe related errors

Important: You should check the sema_service.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 sema_service issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active sema_service process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the sema_service.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

sema_service.exe [all]