Win Defrag - How To Remove?


Win Defrag is a completely useless computer’s optimization utility, which will report fake problems with a reason of asking the money for their elimination. Together with earlier released Win HDD and HDD Control, Win Defrag malware should be treated in the same way – removed from the system, because it belongs to the same family of rogues. Instead of wasting your money for these threats, you should remove Win Defrag as soon as possible.

Mostly, this scam gets on the machine without any permission asked and then starts making havoc there by modifying some system parameters with a reason to interrupt every time you reboot your PC. Win Defrag uses backdoor trojans for its infiltration and that’s why it becomes capable enough to get inside undetected. When it has been successfully downloaded and installed into the targeted machine, malware starts doing its best to remain undetected, so it disables other security programs found on board. Besides, some of its victims claim that when on board Win Defrag completely disables computer, so that you can’t even browse the web or launch Task Manager. Then, Win Defrag starts triggering lots of alerts and also runs some fabricated system scanners that all will return the same old story that your computer is full of errors and problems, for example:

Critical Error
Windows can’t find hard disk space. Hard drive error

Critical Error!
Windows was unable to save all the data for the file \System32\496A8300. The data has been lost. This error may be caused by a failure of your computer hardware.

Critical Error
A critical error has occurred while indexing data stored on hard drive. System restart required.

The system has been restored after a critical error. Data integrity and hard drive integrity verification required.

Bad Sectors on hard drive or damaged file allocation table – Critical Error

System Restore

Hard drive does not respond to system commands – Critical Error

Requested registry access is not allowed. Registry defragmentation required
Read time of hard drive clusters less than 500 ms
32% of HDD space is unreadable
Bad sectors on hard drive or damaged file allocation table
GPU RAM temperature is critically high. Urgent RAM memory optimization is required to prevent system crash
Drive C initializing error
Ram Temperature is 83 C. Optimization is required for normal operation.
Hard drive doesn’t respond to system commands
Data Safety Problem. System integrity is at risk.
Registry Error – Critical Error

Additionally, Win Defrag will ask you to install its commercial software. After creating a need of “powerful tool”, most of you may fall into this scam and pay for “license”. However, only scammers will be supported after paying for Win Defrag. Just like any other scamware, Win Defrag must be removed from the system and never purchased. In order to get rid of this fraudulent tool you must rely on a reputable anti-spyware, like spyhunter or Malwarebytes. Besides, you may also need to stop the processes of this scam and launch safe mode with networking to disable it. Read the following removal guide and remove Win Defrag.
The key discovered by XyliBox for Win HDD works for Win Defrag as well. Copy and paste it in its help/support section: 0973467457475070215340537432225 . Do not forget, that this will not completely remove malware, just disable the most annoying parts of Win Defrag behaviour. For full removal, use manual removal instructions of scan with spyhunter or Malwarebytes.

Automatic Win Defrag removal tools

Note: Reimage trial provides detection of parasites and assists in their removal for free. You can remove detected files, processes and registry entries yourself or purchase a full version.  We might be affiliated with some of these programs. Full information is available in disclosure

Manual removal


Important Note: Although it is possible to manually remove Win Defrag, such activity can permanently damage your system if any mistakes are made in the process, as advanced spyware parasites are able to automatically repair themselves if not completely removed. Thus, manual spyware removal is recommended for experienced users only, such as IT specialists or highly qualified system administrators. For other users, we recommend using Reimage or other tools found on


About the author

 - Passionate web researcher

I have been working with project for a while now and I would like to think that our research team has managed to raise awareness about cyber security. I study the newest infections, help out with manual instructions and answer questions that our users might have.

November 30, 2010 15:51, April 25, 2012 12:38

4 thoughts on “Win Defrag

  1. Luckily, my Vista takes a restore point each morning at 0100. After toying around with this guy, I did a system restore from the point taken that morning. Luckily, the thing came in sometime after the point was taken so the problem went away. I DID check for all the bogus files and registry entries. My system security (AVG, Windows defender, Windows Firewall)is screwed down pretty tight and I cannot for the life of me figure how this thing got in unless it was on the back of a FACEBOOK transaction. Anyway, this is FYI that doing a system restore from a previous restore point DID eliminate the threat on my system.

  2. It could be some infected Advertisement in facebook or some application there. It happens. It can also be a network worm, or trojan already in system. I would recommend re-scanning your PC with mbam/ Spyware doctor to make sure that there are no trojans (that could redownload infection again).

  3. I’m having a terrible time getting this thing out of my computer! Any suggestions? I ran Webroot, Malbytes, and trying to run Spydoctor, I don’t know what else to do? I lost my internet connection, and can’t seem to get that back at all???

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