What is Dealster

Dealster by InstalleRex-WebPick is adware that infects Google Chrome, Mozilla Firefox and Internet Explorer. It displays ad modules “Ads by Dealster” or “Powered by Dealster” in this browsers. Advertising may be displayed in form of pop-ups, banners, drop-down ads. In some cases Dealster inserts ads in search results. It can be installed as BHO for Internet Explorer and extension for Google Chrome and Mozilla Firefox. It creates folder in hidden ProgramData folder. In this article I prepared complete removal guide.

ads by dealster

How Dealster infected your PC

Dealster infects your PC during installation of low-quality free utilities, downloaded from unverified websites. During such installations you are offered to install additional software (usually adware) with or without option to decline such offers. Sometimes installation of Dealster may be mentioned in user license agreement. Big software download sites (Download.com, UpdateStar.com) distribute adware via “downloaders”. Be cautious and read installation texts carefully.

Download Dealster Removal Tool

Download Removal Tool

To remove Dealster completely we recommend you to use SpyHunter 5 from EnigmaSoft Limited. It detects and removes all files, folders and registry keys of Dealster and several millions of other adware, hijackers, toolbars.

Remove Dealster manually for free

Here is manual step-by-step tutorial for full Dealster removal from your computer. This works 99% and was checked with the latest versions of Dealster installer on operating systems with latest updates and browser versions.

Remove Dealster from Control Panel

To start removing Dealster you should remove it using Control Panel. It should uninstall correctly, however, we recommend you to use IObit Uninstaller to clean leftover items after uninstalling. Here are instructions for Windows XP, Windows 7 and Windows 8.

Other aliases of Dealster adware, check those names in programs list:

Remove Dealster from Windows XP:

  1. Click on Start button.
  2. Choose Control Panel.
  3. Click Add or Remove Programs.
  4. Find Dealster.
  5. Click Uninstall.

Remove Dealster from Windows 7:

  1. Click Start button.
  2. Then go to Control Panel.
  3. Click Uninstall a Program.
  4. Find Dealster and click Uninstall.

Remove Dealster from Windows 8:

  1. Hover mouse pointer to the bottom-right corner to see Menu.
  2. Click Search.
  3. After that click Apps.
  4. Then Control Panel.
  5. Click Uninstall a Program under Programs.
  6. Find Dealster, click Uninstall.

Cannot uninstall Dealster

In some cases Dealster won’t uninstall and gives you message that “You do not have sufficient access to uninstall Dealster. Please, contact your system administrator” when you try to remove it from Control Panel or “Access denied” error when removing Dealster folder and files. This happens, because file dealster.exe or service does not allow you to do it. In this case I will recommend you to use SpyHunter 5 or Malwarebytes or uninstall Dealster in Safe Mode. To boot in Safe Mode do the following:

  1. Reboot your computer.
  2. While it starts booting press F8 button.
  3. This will open Advanced Boot Options menu.
  4. Choose Safe Mode and wait until Windows loads.
  5. Go to Control Panel > Uninstall a program and remove Dealster

>> See detailed instructions and video tutorial on how to boot in Safe Mode

Remove Dealster add-on from your browsers

Removing Dealster from Control Panel often does not bring desired effect. It is browser extension and it may still be active in Google Chrome and Mozilla Firefox. Here are instructions on how to remove Dealster extension from your browsers manually.

Google Chrome:

  1. Start Google Chrome browser
  2. In address box type (or copy-paste) chrome://extensions/.
  3. Find Dealster extension.
  4. Click the trash can icon to remove it.

Mozilla Firefox:

  1. Start Mozilla Firefox browser.
  2. In address box type (or copy-paste) about:addons.
  3. Choose Dealster extension.
  4. Click Disable or Remove button.

Internet Explorer (9, 10, 11):

Note: There is no feature to remove browser extensions from browser in latest version of Internet Explorer. To remove Dealster from Internet Explorer, please, perform instructions for uninstalling program from Control Panel. To disable Dealster, please, do the following:

  1. Open Internet Explorer.
  2. Click on gear/asterisk icon in the top-right corner.
  3. In opened menu Manage Add-ons.
  4. Select Toolbars and Extensions.
  5. Click Disable Dealster.

Opera Browser:

Generally, Dealster does not install in Opera browser however you can always double check. Do the following:

  1. Start Opera browser.
  2. Go to Tools > Extensions > Manage Extensions.
  3. Find Dealster extension.
  4. Click Uninstall button.

Remove following files and folders

Dealster files:


Dealster folders:

C:\Program Files\Dealster

Alternative way to remove adware browser extension Dealster

avast browser cleanup For safe and effective browser extension removal use avast! Browser Cleanup utility. Run it with administrator privileges and remove all extensions with bad rating including Dealster. You can also reset your browser settings for each of your browsers: Internet Explorer, Google Chrome, Mozilla Firefox.

Download Avast Browser Cleanup
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James Kramer
Hello, I'm James. My website Bugsfighter.com, a culmination of a decade's journey in the realms of computer troubleshooting, software testing, and development. My mission here is to offer you comprehensive, yet user-friendly guides across a spectrum of topics in this niche. Should you encounter any challenges with the software or the methodologies I endorse, please know that I am readily accessible for assistance. For any inquiries or further communication, feel free to reach out through the 'Contacts' page. Your journey towards seamless computing starts here


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