Cydoor Desktop Media is the industry leader in powerful desktop marketing and technology solutions. With over 55 million desktop software users and billions of monthly impressions, Cydoor Desktop Media provides razor-sharp targeting and outstanding results.

Our comprehensive network displays banners, buttons, pop-ups, keywords and iSkins within leading software applications that reach a captive audience in an uncluttered, controlled environment - on-line, off-line, anytime.

Cydoor ships with many free programs such as iMesh, Kazaa, Limewire, Grokster, etc. These are called the "hosting Adware" in the vendor's uninstall instructions below. Cydoor stores the ads in "%SystemDir%\AdCache\" or "%SystemDir%\Roodyc\".

Note: %SystemDir% is a variable (?). By default, this is C:\Windows\System (Windows 95/98/Me), C:\WINNT\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).




cd_install_202.exe, cd_clint.dll, cd_htm.dll, cd_load.exe, cd_swf.dll,

If you have any of the files related to Cydoor on your system, please send them for additional analysis. Generally, I have only analysed a few versions for each software component listed at this web site. With your help I will be able to look at both old and more recent versions of the Cydoor software. Thank you very much for your time!


Cydoor whois

Privacy policy

Cydoor privacy policy


Bazooka Adware and Spyware Scanner detects Cydoor. Bazooka is freeware and detects spyware, adware, foistware, trojan horses, viruses, worms and other potentially unwanted applications. Read more »

Known false positives

Kazaa Lite

Uninstall notice for Cydoor

Notice that removing Cydoor may cause the program that bundled it to not function as intended.

Uninstall procedure

This is the uninstall instructions from Cydoor:

If you wish to uninstall our components you must first uninstall the hosting Adware and then the Cydoor component will uninstall itself automatically. If this does not happen it could be a result of several situations:

1. You have another Adware using our components installed on your computer and so the dll's are still needed.
2. In some cases you will need to remove it from the "Add/Remove program" window, there it will appear as: "[Adware name] ads support".
3. Our very early versions didn't include the uninstall feature, and we apologize for that.

If you run into problems uninstalling Cydoor, please contact the vendor for support.

Uninstall Cydoor with FreeFixer

I'm working on a general purpose tool for removing unwanted software. The tool is called FreeFixer and can help you remove unwanted Browser Helper Objects, Internet Explorer toolbars and software that starts automatically when you reboot your computer, so it can offer some assistance while uninstalling Cydoor. The manual removal instructions listed below will help you to identify what to delete with FreeFixer.

Read more about FreeFixer.

Manual removal

Please follow the instructions below if you would like to remove Cydoor manually. Please notice that you must follow the instructions very carefully and delete everything that is mentioned. In most cases the removal will fail if one single item is not deleted. If Cydoor remains on your system after stepping through the removal instructions, please double-check by stepping through them again.

  1. Uninstall the hosting adware. This can be iMesh, Kazaa, Limewire, Grokster and many more.
  2. Start your computer in safe mode.
  3. Start the registry editor. This is done by clicking Start then Run. (The Run dialog will appear.) Type regedit and click OK. (The registry editor will open.)
  4. Browse to the key:
    'HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ Run'
  5. In the right pane, delete the value called 'Cydoor', if it exists.
  6. Browse to the key:
    'HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ RunOnce'
  7. In the right pane, delete the value called 'CydoorUpdate', if it exists.
  8. Exit the registry editor.
  9. Delete the following files and folders:
    Note: %SystemDir% is a variable (?). By default, this is C:\Windows\System (Windows 95/98/Me), C:\WINNT\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

Problems uninstalling? Click here.

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Contact information for Cydoor's vendor

In order to provide correct, accurate and updated information about Cydoor I encourage the vendor to contact me if any part of this write-up needs a revision.

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Related links

Bazooka - Free scan for spyware, adware, trojan horses, keyloggers, etc. Detects more than 500 potentially unwanted applications. Freeware!

The File Database - Search the file database for more information. Free!

PopUp Blocker Test - Find out if your pop-up killer can handle all pop-ups. Free!

Kephyr Labs - Find out what is going on at Kephyr. Try products in an early stage of development.

Read more about FreeFixer, Kephyr's latest spyware removal tool.
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