What is mddhz.sys?

mddhz.sys is digitally signed by clairavauxtechnology.com.

mddhz.sys is usually located in the 'C:\Windows\system32\drivers\' folder.

Some of the anti-virus scanners at VirusTotal detected mddhz.sys.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

Vendor and version information [?]

mddhz.sys does not have any version or vendor information.

Digital signatures [?]

mddhz.sys has a valid digital signature.

Signer nameclairavauxtechnology.com
Certificate issuer nameGlobalSign CodeSigning CA - G3
Certificate serial number00feeffd95bae308f551de40

VirusTotal report

6 of the 68 anti-virus programs at VirusTotal detected the mddhz.sys file. That's a 9% detection rate.

ScannerDetection Name
Cylance Unsafe
Endgame malicious (moderate confidence)
Invincea heuristic
Malwarebytes Adware.Wajam
TrendMicro-HouseCall Suspicious_GEN.F47V0914
Webroot W32.Adware.Gen
6 of the 68 anti-virus programs detected the mddhz.sys file.

mddhz.sys removal instructions

The instructions below shows how to remove mddhz.sys with help from the FreeFixer removal tool. Basically, you install FreeFixer, scan your computer, check the mddhz.sys file for removal, restart your computer and scan it again to verify that mddhz.sys has been successfully removed. Here are the removal instructions in more detail:

  1. Download and install FreeFixer: http://www.freefixer.com/download.html
  2. Start FreeFixer and press the Start Scan button. The scan will finish in approximately five minutes.
    Screenshot of Start Scan button
  3. When the scan is finished, locate mddhz.sys in the scan result and tick the checkbox next to the mddhz.sys file. Do not check any other file for removal unless you are 100% sure you want to delete it. Tip: Press CTRL-F to open up FreeFixer's search dialog to quickly locate mddhz.sys in the scan result.
    Red arrow point on the unwanted file
  4. Scroll down to the bottom of the scan result and press the Fix button. FreeFixer will now delete the mddhz.sys file.
    Screenshot of Fix button
  5. Restart your computer.
  6. Start FreeFixer and scan your computer again. If mddhz.sys still remains in the scan result, proceed with the next step. If mddhz.sys is gone from the scan result you're done.
  7. If mddhz.sys still remains in the scan result, check its checkbox again in the scan result and click Fix.
  8. Restart your computer.
  9. Start FreeFixer and scan your computer again. Verify that mddhz.sys no longer appear in the scan result.
Please select the option that best describe your thoughts on the removal instructions given above

Free Questionnaires

Hashes [?]


What will you do with mddhz.sys?

To help other users, please let us know what you will do with mddhz.sys:


Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

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