Cdn.downloaddefy.com pop-ups – how to stop?

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Following this tutorial will help you to understand more about the origin of cdn.downloaddefy.com and about their effective elimination from your system. Note that this tutorial below will furnish you with relevant instructions to get rid of such pop-ups both automatically and manually. You may choose either of these two solutions.

Cdn.downloaddefy.com pop-up

First of all, you have to understand that cdn.downloaddefy.com pop-ups are all caused by the presence of some nasty adware in your system. However, things may become even worse if you actually agree and proceed with misleading guidelines expressed by these pop-ups. Below please find the example of how misleading they truly are:

Please Update your Software
Please update your Media Downloader in order to watch online video
Updating takes under a minute – No restart is required

In fact, there’s absolutely no need for you at all to download, install or update your Media Downloader. This is an absolute scam which is not grounded on the real necessity to make your system function better. This pop-ups is originated by some serious adware in your computer. Indeed, you could see it occasionally as a result of clicking on some malicious link in the Internet. However, in case you see very many of these pop-ups showing up on a regular basis, the chances are that your system is infected by adware.

You must be extremely careful when you install any free applications today. There are many cost-free programs bundled by default with many other free applications. If you install cost-free software regularly, make sure you always know what else you’re suggested to be made the part of your system by default. So, if you read about some additional third-party programs you don’t need, go ahead and switch to the advanced or custom installation mode. This is the place where you may uncheck all additional third-party applications from becoming the part of your computer by default.

Download Combo Cleaner

Sometimes people fail to be duly attentive and just click on “Next” or “I agree” buttons, without actually understanding what exactly they agree with. As a consequence, they often permit various junk programs to be made the part of their PCs by default. This is exactly how adware causing cdn.downloaddefy.com pop-ups comes into the PCs. To fix this problem and get rid of these pop-ups and related adware please scan your system with a reliable antispyware program called GridinSoft Trojan Killer. You will need to remove all the infections it finds (with its full registered version) and to reset your browsers with its help. Alternatively, you may follow the manual removal solution contained in the remainder of this tutorial. In any case, if you require more help on our part please feel free to contact us at any time of your preference.


Anti-malware tool necessary to eliminate cdn.downloaddefy.com pop-ups automatically.

Download GridinSoft Trojan Killer

Detailed automatic removal instructions:

  • Download GridinSoft Trojan Killer via the download button (above).
  • Install the application and scan your computer with it.
  • At the end of scan click “Apply” to remove all infections related to this adware:
  • Apply scan results by Trojan Killer

  • Important! It is also very important that you reset your browsers using GridinSoft Trojan Killer after you delete this particular adware. Shut down all your available browsers right now.
  • In GridinSoft Trojan Killer click on “Tools” tab and select “Reset browser settings“:
  • Tool to reset browser settings

  • Select which particular browsers you would like to be reset and choose the reset options:
  • Options to reset browsers

  • Finally, Click on “Reset” button.
  • You will receive the confirmation windows about browser settings reset successfully.
  • Reboot your system now.

Video explaining how to reset your browser using GridinSoft Trojan Killer:

Manual (free) instructions to get rid of cdn.downloaddefy.com pop-ups.

Step 1. Uninstalling adware from the Control Panel of your computer.

  1. Make sure that all your browsers infected with cdn.downloaddefy.com pop-ups are shut down (closed).
  2. In Windows XP, Vista and 7 click on “Start” and go to the “Control Panel“:
  3. Accessing the Control Panel in Windows XP, Vista and 7 versions

  4. To access the Control Panel in Windows 8 or 8.1, move the PC mouse next to the left-bottom hot corner of your Windows 8 or 8.1 screen, then right-click on it:
  5. How to access the Control Panel in Windows 8 and 8.1

  6. In Windows XP click on “Add or remove programs“:
  7. Add or remove programs in Windows XP

  8. In Windows Vista, 7, 8 and 8.1 click on “Uninstall a program“:
  9. Uninstall a program in Windows Vista, 7, 8 and 8.1

  10. Uninstall suspicious adware application from your workstation. To make it possible, in Windows XP click on “Remove” button related to it. In Windows Vista, 7, 8 and 8.1 right-click on adware program with the computer mouse and click on “Uninstall / Change“.
  11. Step 2. Removing the adware from the list of add-ons and extensions of your browser.

    In addition to removal of any suspicious adware programs from the Control Panel of your system as explained above, you also need to remove this adware from the add-ons or extensions of your browser. Please follow this guide for managing browser add-ons and extensions for more detailed information. Remove any components related to this particular adware and other unwanted programs installed on your system.