What is VTTimer.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the VTTimer.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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VTTimer.exe file information

Windows Task Manager with VTTimer
VTTimer.exe process in Windows Task Manager

The process known as S3Timer belongs to software S3 Graphics, Inc. Utilities by S3 Graphics (

Description: VTTimer.exe is not essential for the Windows OS and causes relatively few problems. The VTTimer.exe file is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 53,248 bytes (83% of all occurrences), 49,152 bytes and 11 more variants. 
The program has no file description. It is not a Windows core file. The program starts upon Windows startup (see Registry key: MACHINE\Run, Run). The program has no visible window. VTTimer.exe is a trustworthy file from Microsoft. Therefore the technical security rating is 41% dangerous, however you should also read the user reviews.

Recommended: Identify VTTimer.exe related errors

If VTTimer.exe is located in a subfolder of C:\Windows\System32, the security rating is 100% dangerous. The file size is 530,936 bytes. The program has a visible window. There is no description of the program. User opinion: dangerous The process starts upon Windows startup (see Registry key: MACHINE\Run, Run). It is not a Windows core file. VTTimer.exe is able to manipulate other programs. VTTimer.exe appears to be a compressed file.

External information from Paul Collins:

Important: Some malware camouflages itself as VTTimer.exe, for example Mal/Generic-A (detected by Sophos), and Gen:Trojan.Heur.VB.Gm0@eyMF0dO (detected by BitDefender). Therefore, you should check the VTTimer.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.


User Comments

S3 on board graphics utility
for onboard video card.....
It is vendor bloatware. I cannot tell that it does anything at all except eat memory and cpu.
An error message pops up after boot up.If i click anything on this window,blue screen appears and windows crashes.
I don't know all it does but I do know ONE thing. Apparently it handles standby mode. If I stop this process my computer's display remains black after waking up from standby (only tried S3 mode).
its apart of motherboard Pc chips
  basemrimawi   (further information)
Keylogger - Almost always at %windir%/system32/spolscv/ dir (ocult)
  Neo Tyrael   (further information)
a utility for S3 video chip set on my HP a510n; since I don't use graphics or games very much I can remove it but if your computer is running OK, you can leave it alone and assume it must be there for a reason or HP wouldn't have spent time and money to make it and put it on the computer!
  Larry Holmes  
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of VTTimer.exe: based on 33 votes with 9 reviews. 23 users think VTTimer.exe is essential for Windows or an installed application. 3 users think it's probably harmless. 2 users think it's neither essential nor dangerous. 3 users suspect danger. 2 users think VTTimer.exe is dangerous and recommend removing it. 3 users don't grade VTTimer.exe ("not sure about it").

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Best practices for resolving VTTimer issues

A clean and tidy computer is the key requirement for avoiding problems with VTTimer. 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.

To help you analyze the VTTimer.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

VTTimer.exe [all]