Remove Gemius virus (Removal Guide) - updated Jul 2019

Uninstall Gemius from Windows systems

Make sure you follow these instructions carefully. It's important to find and delete all related components that might be responsible for providing unwanted ads on your computer.

1. Click Start → Control Panel → Programs and Features (if you are Windows XP user, click on Add/Remove Programs).
2. If you are Windows 10 / Windows 8 user, then right-click in the lower left corner of the screen. Once Quick Access Menu shows up, select Control Panel and Uninstall a Program.
3. Uninstall Gemius and related programs
   Here, look for Gemius or any other recently installed suspicious programs.
4. Uninstall them and click OK to save these changes.

Erase Gemius from Mac OS X system

1. If you are using OS X, click Go button at the top left of the screen and select Applications.
2. Wait until you see Applications folder and look for Gemius or any other suspicious programs on it. Now right click on every of such entries and select Move to Trash.

Get rid of Gemius from Internet Explorer (IE)

1. Remove dangerous add-ons
   Open Internet Explorer, click on the Gear icon (IE menu) on the top right corner of the browser and choose Manage Add-ons.
2. You will see a Manage Add-ons window. Here, look for Gemius and other suspicious plugins. Disable these entries by clicking Disable:
3. Change your homepage if it was altered by virus:
   Click on the gear icon (menu) on the top right corner of the browser and select Internet Options. Stay in General tab.
4. Here, remove malicious URL and enter preferable domain name. Click Apply to save changes.
5. Reset Internet Explorer
   Click on the gear icon (menu) again and select Internet options. Go to Advanced tab.
6. Here, select Reset.
7. When in the new window, check Delete personal settings and select Reset again to complete Gemius removal.

Remove Gemius virus from Microsoft Edge

Reset Microsoft Edge settings (Method 1):

1. Launch Microsoft Edge app and click More (three dots at the top right corner of the screen).
2. Click Settings to open more options.
3. Once Settings window shows up, click Choose what to clear button under Clear browsing data option.
4. Here, select all what you want to remove and click Clear.
5. Now you should right-click on the Start button (Windows logo). Here, select Task Manager.
6. When in Processes tab, search for Microsoft Edge.
7. Right-click on it and choose Go to details option. If can’t see Go to details option, click More details and repeat previous steps.
8. When Details tab shows up, find every entry with Microsoft Edge name in it. Right click on each of them and select End Task to end these entries.

Resetting Microsoft Edge browser (Method 2):

If Method 1 failed to help you, you need to use an advanced Edge reset method.

1. Note: you need to backup your data before using this method.
2. Find this folder on your computer: C:\Users\%username%\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe.
3. Select every entry which is saved on it and right click with your mouse. Then Delete option.
4. Click the Start button (Windows logo) and type in window power in Search my stuff line.
5. Right-click the Windows PowerShell entry and choose Run as administrator.
6. Once Administrator: Windows PowerShell window shows up, paste this command line after PS C:\WINDOWS\system32> and press Enter:
   

   Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register $($_.InstallLocation)\AppXManifest.xml -Verbose}

   

Once these steps are finished, Gemius should be removed from your Microsoft Edge browser.

Delete Gemius from Mozilla Firefox (FF)

Check the list of add-ons on Firefox and uninstall the ones that look suspicious.

1. Remove dangerous extensions
   Open Mozilla Firefox, click on the menu icon (top right corner) and select Add-ons → Extensions.
2. Here, select Gemius and other questionable plugins. Click Remove to delete these entries.
3. Reset Mozilla Firefox
   Click on the Firefox menu on the top left and click on the question mark. Here, choose Troubleshooting Information.
4. Now you will see Reset Firefox to its default state message with Reset Firefox button. Click this button for several times and complete Gemius removal.

Eliminate Gemius from Google Chrome

1. Delete malicious plugins
   Open Google Chrome, click on the menu icon (top right corner) and select Tools → Extensions.
2. Here, select Gemius and other malicious plugins and select trash icon to delete these entries.
3. Click on menu icon again and choose Settings → Manage Search engines under the Search section.
4. When in Search Engines..., remove malicious search sites. You should leave only Google or your preferred domain name.
5. Reset Google Chrome
   Click on menu icon on the top right of your Google Chrome and select Settings.
6. Scroll down to the end of the page and click on Reset browser settings.
7. Click Reset to confirm this action and complete Gemius removal.

Uninstall Gemius from Safari

1. Remove dangerous extensions
   Open Safari web browser and click on Safari in menu at the top left of the screen. Once you do this, select Preferences.
2. Here, select Extensions and look for Gemius or other suspicious entries. Click on the Uninstall button to get rid each of them.
3. Reset Safari
   Open Safari browser and click on Safari in menu section at the top left of the screen. Here, select Reset Safari....
4. Now you will see a detailed dialog window filled with reset options. All of those options are usually checked, but you can specify which of them you want to reset. Click the Reset button to complete Gemius removal process.