How to Fix viac7.sys.mui Error? Is it safe?

Frustrated by the viac7.sys.mui error message? Well, you should want to know what this viac7.sys.mui file is, what causes this error and the most important thing is how to fix this error. In this page, you will find all answers to your questions about this viac7.sys.mui and the methods to fix it.

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What's viac7.sys.mui File?

As its file extension denotes, viac7.sys.mui is a vital mui file and it's a component of the software Microsoft® Windows® Operating System developed by Windows Software Developer. The latest version of viac7.sys.mui file is 6.0.6000.16386 and MD5 value is 46bfd6e1cc2dc455273fc45faeff4ccc. This error can be seen on Windows XP, Windows Vista, Windows 7, Windows 8 and Windows 10.

viac7.sys.mui file information:
File Name:   
   viac7.sys.mui (Free Scan)
File Description:   
   Processor Device Driver
Product Name:   
   Microsoft® Windows® Operating System
Product Version:   
   Windows Software Developer
File md5:   
File type:   
   mui file
Security Level(0-5):   
OS Infected:   
   Download viac7.sys.mui Error Free Scan Tool

Why Do I Receive viac7.sys.mui Error?

Microsoft® Windows® Operating System and the Windows will generate viac7.sys.mui error when viac7.sys.mui file cannot be used due to the removal or corruption of viac7.sys.mui file. Virus infection is also a potential cause of viac7.sys.mui error.

Popular viac7.sys.mui Error Messages

  • The application has failed to start because viac7.sys.mui was not found. Re-installing the application may fix this problem.
  • The program can't start because viac7.sys.mui is missing from your computer. Try reinstalling the program to fix this problem.
  • viac7.sys.mui failed. The specified module could not be found.
  • File not found: viac7.sys.mui.
  • Failed to load library 'viac7.sys.mui'.
  • Access violation in module 'viac7.sys.mui'.
  • Component 'viac7.sys.mui' or one of its dependencies not correctly registered a file is missing or invalid.

You may receive viac7.sys.mui error when you run or close Microsoft® Windows® Operating System, start or shut down the computer, or use specific function of Microsoft® Windows® Operating System. The time you encounter the error is very important to troubleshoot the problem.

Causes of viac7.sys.mui Error

viac7.sys.mui error can be caused by plenty of reasons. The following are the most common causes of viac7.sys.mui error.

  • The latest version of viac7.sys.mui file is overwritten by a previous version installed by another newly-installed program.
  • There is a malfunctioning or faulty hardware in your computer.
  • viac7.sys.mui file is infected with malicious adware, Trojans, spyware and malware.
  • The associated entries of viac7.sys.mui are corrupted in the registry.
  • viac7.sys.mui file that is still used by other programs is uninstalled by another program.

How to Fix viac7.sys.mui Error?

If you're confident of fixing this problem yourself, we have listed several solutions to troubleshoot your viac7.sys.mui problem.

Method 1: Install Windows updates.

Computers and computer software can quickly become out-dated, so Microsoft keeps releasing updates in order to improve their security and fix technical glitches. Your viac7.sys.mui error may be fixed after you install all latest Windows updates.


a. Go to the desktop of your system, right click on Computer and click Properties.

computer properties

b. In the left pane, click Windows Update.

windows update

c. In the Windows Update window, click Check for updates.

check for updates windows 7

d. If any update is found, click Install updates to install.

install updates windows 7

Method 2: Run a virus scan.

Malware infection is one of the most popular cause of various computer problems like viac7.sys.mui error. Computer malware can make their way into the system, change system settings and corrupt system files. When this happens, Microsoft® Windows® Operating System and Windows becomes more prone to viac7.sys.mui error and even malfunction.


a. Restart your system into Safe Mode with Networking.

b. Open your antivirus or antispyware program. (You can also use this recommended malware detect tool)

c. Run a full scan for your system.

d. After the scan completes, either quarantine or remove any detected malware.

e. Restart your system.

Method 3: Look for deleted viac7.sys.mui file.

When Microsoft® Windows® Operating System and the Windows cannot find viac7.sys.mui file, it will tell you that viac7.sys.mui is missing or not found. As a result, try your luck to see if viac7.sys.mui is in the Recycle Bin.


a. Double click on the Recycle Bin icon on your desktop to open it.

b. Search thru all deleted files there and look for the viac7.sys.mui file.

c. If it's found, then right click on it and click Restore.

restore file

What can you do if the Recycle Bin has been emptied? Try to use a file recovery tool to help you recover the file.

Method 4: Repair corrupted Windows registry.

As the most important part of Windows operating system, Windows registry is a place that stores all information and configurations of software and hardware. A problematic registry is one of the most common causes of computer errors like viac7.sys.mui error. Software installation, uninstallation, malware infection can make changes to the registry. Over time, more and more invalid entries are left and accumulated in the registry and then lead to various errors and problems. The registry needs regular maintenance to keep it tidy and stable. Manual editing the registry is not practical for people with no computer expertise, it's recommended that you use a registry cleaner to do this job.


Note: It requires certain computer knowledge to perform the above solutions. If you're not comfortable with this process, it's recommended that you download and run this automatic error fix utility to fix your PC problems automatically:

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Does viac7.sys.mui error still persist?

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