What is Cassiopessa.com

Cassiopessa.com is browser hijacker and unwanted search engine. It infects Google Chrome, Mozilla Firefox and Internet Explorer. Cassiopessa.com redirects user searches to search.yahoo.com and may be affiliated with this search engine. It overrides any current browser settings, such as default search engine, homepage, newtab. Cassiopessa.com may also modify browser shortcuts. As a result, Cassiopessa.com website will be opened every time you start your browser. Hijacker may present ad-supported and sponsored search results, that may lead to downloading unwanted software and bring more problems to your computer. On this page we explain how to remove Cassiopessa.com from browsers and Windows and prevent this type of infection.

Cassiopessa.com search

How Cassiopessa.com infected your PC

Cassiopessa.com can get on your PC along with freeware. Often it happens when users install small utilities of popular type: converters, media players, downloaders, archivers. Also it may happen, if users download fake Java or Adobe Flash player updates. Such updates often offered on pirate sport streaming sites or low-quality video sites. Users need to be attentive and decline any additional offers during installation of free programs, and download them only from official websites. You can also use SpyHunter 5 or Malwarebytes Anti-Malware to remove Cassiopessa.com and protect computer from hijackers.

Download Removal Tool

Download Removal Tool

compatible with microsoft

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

Remove Cassiopessa.com manually for free

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

Remove Cassiopessa.com from Control Panel

To start removing Cassiopessa.com you should uninstall it using Control Panel. It can be present by different names – “Tny_Cassiopesa” or just “Cassiopesa”. 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.

Remove Cassiopessa.com from Windows XP:

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

Remove Cassiopessa.com from Windows 7:

  1. Click Start button.
  2. Then go to Control Panel.
  3. Click Uninstall a Program.
  4. Find Cassiopessa.com or Tny_Cassiopesa and click Uninstall.

Remove Cassiopessa.com 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 Cassiopessa.com or Tny_Cassiopesa, click Uninstall.

Remove Cassiopessa.com from Windows 10:

There are 2 ways to uninstall Cassiopessa.com from Windows 10

Way one
  1. Click on the Start button.
  2. In opened menu choose Settings.
  3. Click on the System tile.
  4. Click Apps & features and locate Cassiopessa.com or Tny_Cassiopesa in the list.
  5. Click on it and then click Uninstall button near it.
Way two (classic)
  1. Right-click on the Start button.
  2. In opened menu choose Programs and Features.
  3. Locate Cassiopesa in the list.
  4. Click on it and then click Uninstall button above.

Cannot uninstall Cassiopessa.com

In some cases Cassiopessa.com won’t uninstall and gives you message that “You do not have sufficient access to uninstall Cassiopessa.com. Please, contact your system administrator” when you try to remove it from Control Panel or “Access denied” error when removing Cassiopessa.com folder and files. This happens, because process or service does not allow you to do it. In this case I will recommend you to use SpyHunter 5 or Malwarebytes or uninstall Cassiopessa.com 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 “Cassiopessa.com”

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

Remove malicious add-ons from your browsers

Uninstalling Cassiopessa.com from Control Panel often does not bring desired effect. It sometimes have browser extension and it may still be active in Google Chrome and Mozilla Firefox. Here are instructions on how to remove Cassiopessa.com related extension from your browsers manually.

Google Chrome:

  1. Start Google Chrome browser
  2. In address box type (or copy-paste) chrome://extensions/.
  3. Find suspicious extensions.
  4. Click the trash can icon to remove them.
  5. Also remove other suspicious extensions from the list.

Mozilla Firefox:

  1. Start Mozilla Firefox browser.
  2. In address box type (or copy-paste) about:addons.
  3. Choose suspicious extension.
  4. Click Disable or Remove button.
  5. Remove all suspicious extensions from the list.

Internet Explorer (9, 10, 11):

Note: There is no feature to remove browser extensions from browser in latest version of Internet Explorer. To remove Cassiopessa.com from Internet Explorer, please, perform instructions for uninstalling program from Control Panel. To disable Cassiopessa.com, 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 Cassiopessa.com.
  6. Also disable other suspicious extensions from the list.

Opera Browser:

Generally, Cassiopessa.com 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 Cassiopessa.com extension.
  4. Click Uninstall button.
  5. Also remove other suspicious extensions from the list.

Reset browsers settings (homepage, default search)

Cassiopessa.com installs search engine that hijacks your browsers. Here is instruction to reset your browsers homepage, newtab and search engine to default values.

Google Chrome:

  1. Start Google Chrome browser
  2. In address box type (or copy-paste) chrome://settings/.
  3. Scroll down and find Show advanced settings link.
  4. Click on it and scroll down to the bottom again.
  5. Click Reset browser settings button and click Reset to confirm.

Mozilla Firefox:

  1. Start Mozilla Firefox browser.
  2. In address box type (or copy-paste) about:support.
  3. Click Reset Firefox… button.
  4. Click Reset Firefox to confirm.

Internet Explorer (9, 10, 11):

  1. Start Internet Explorer.
  2. Click on gear/asterisk icon in the top-right corner.
  3. In opened menu choose Internet options.
  4. Click Advanced tab.
  5. Click Reset button.
  6. Choose Delete personal settings and click Reset.

Opera Browser:

  1. Close Opera and open command prompt from the start menu.
  2. Type following command del %AppData%\Opera\Opera\operaprefs.ini
  3. Start Opera.

Alternative way to remove adware browser extensions and reset browser settings

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 related to Cassiopessa.com. You can also reset your browser settings for each of your browsers: Internet Explorer, Google Chrome, Mozilla Firefox.

Download Avast Browser Cleanup

Cleaning browsers shortcuts

shortcut cleaner You can clean your browser shortcuts manually right-clicking on your browser icon, choosing “Properties” and removing hijacker address from “Target” field (leave just the path to your browser). However it is easier to use free Shortcut Cleaner from BleepingComputer. Download it here – its FREE:

Download Shortcut Cleaner

Final tips

Be careful surfing the internet and downloading software, as programs like Cassiopessa.com may become a real headache as they are hard to remove and break your privacy. To keep safe from such threats we recommend you always use antivirus and one of antimalware programs available on the market. One of the best anti-spyware and antimalware programs is SpyHunter 5. It can protect your PC from threats like Cassiopessa.com.

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