What is vtmini?

Vtmini.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if vtmini.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for vtmini drivers in need of updating

Vtmini.sys file information

The process known as VIA/S3G Miniport Driver or viagfx belongs to software UniChrome(Pro) IGP Driver by Copyright© VIA/S3 Graphics Co (

Description: Vtmini.sys is not essential for the Windows OS and causes relatively few problems. Vtmini.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 172,672 bytes (57% of all occurrences), 172,544 bytes, 226,560 bytes or 281,728 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. There is no detailed description of this service. The vtmini.sys file is not a Windows system file. Vtmini.sys is a trustworthy file from Microsoft. vtmini.sys appears to be a compressed file. Therefore the technical security rating is 12% dangerous, however you should also read the user reviews.

Recommended: Identify vtmini.sys related errors

Important: Some malware disguises itself as vtmini.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the vtmini.sys 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

UniChrome(Pro) IGP Driver, or VIA/S3G Miniport Driver from VIA/S3 Graphics Co, Ltd.
VTmini.sys is a device driver for a video adapter made by VIA
it multiplied on my driver. it occupied all the 8 slots of it
It's a file which is needed for video playback. It says it is VGA compatible ? Is VGA an deception for AVG
  John T Fitzpatrick  

Rating chart

Summary: Average user rating of vtmini.sys: based on 23 votes with 5 user comments. 11 users think vtmini.sys is essential for Windows or an installed application. 7 users think it's probably harmless. 3 users think it's neither essential nor dangerous. One user suspects danger. One user thinks vtmini.sys is dangerous and recommends removing it. 2 users don't grade vtmini.sys ("not sure about it").

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Best practices for resolving vtmini issues

A clean and tidy computer is the key requirement for avoiding problems with vtmini. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the vtmini.sys process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

vtmini.sys [all]