How to Fix wbemtest.exe.mui Error? Is it safe?

Frustrated by the wbemtest.exe.mui error message? Well, you should want to know what this wbemtest.exe.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 wbemtest.exe.mui and the methods to fix it.

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What's wbemtest.exe.mui File?

As its file extension denotes, wbemtest.exe.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 wbemtest.exe.mui file is 6.0.6000.16386 and MD5 value is b98bf797d2cfc2c5a4fbde464a5a133f. This error can be seen on Windows XP, Windows Vista, Windows 7, Windows 8 and Windows 10.

wbemtest.exe.mui file information:
File Name:   
   wbemtest.exe.mui (Free Scan)
File Description:   
   WMI Test Tool
Product Name:   
   Microsoft® Windows® Operating System
Product Version:   
   Windows Software Developer
File md5:   
File type:   
   mui file
Security Level(0-5):   
OS Infected:   
   Download wbemtest.exe.mui Error Free Scan Tool

Why Do I Receive wbemtest.exe.mui Error?

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

Popular wbemtest.exe.mui Error Messages

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

You may receive wbemtest.exe.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 wbemtest.exe.mui Error

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

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

How to Fix wbemtest.exe.mui Error?

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

Method 1: Do a System Restore.

System Restore is another useful utility integrated in Windows to help users revert their system files, installed applications, Windows registry and settings to that of a previous point of time. It's often used to fix problems like wbemtest.exe.mui error caused by unexpected change made by a new program installation or abnormal Windows behaviors.

Note: Please do a full backup before performing System Store, otherwise, you may risk losing your files and data.


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

computer properties

b. In the left pane, click System protection.

system protection

c. In the System Properties window, click System Restore.

system restore

d. In the System Restore window, click Next.

system restore next

e. From the list of restore points, select one you wish to restore from. Click Next.

select restore point

f. If you do not want to change your decision, then click Finish.

confirm system restore

g. Click Yes.

yes restore

Method 2: Run a virus scan.

Malware infection is one of the most popular cause of various computer problems like wbemtest.exe.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 wbemtest.exe.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: 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 wbemtest.exe.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 4: Update device drivers.

Many issues, conflicts and vulnerabilities of device drivers may result in unexpected problems like wbemtest.exe.mui error. Drivers are software that enables Windows system to talk and give instructions to hardware devices. Though drivers work correctly one day, they may have problems the next day. Keeping your drivers updated is a way to keep your system error-free.

Method 5: 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 wbemtest.exe.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 wbemtest.exe.mui error still persist?

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