Mahjong World Contest ads. How to remove? (Uninstall guide)

removal by Julie Splinters - - | Type: Adware
12

How serious is Mahjong World Contest virus?

Mahjong World Contest virus is a suspicious program which may infect your computer if you often play online games, such as Mahjong on random sites. This browser extension installs as a supposed flash-based game but, in reality, is a potentially unwanted program. The users of this programs notice that soon after the Mahjong World Contest hijack, the browsers like the Internet Explorer, Firefox or Google Chrome may start to display all sorts of intrusive ads, banners, interstitial, hyperlinks, in-texts ads or coupons. It is not uncommon for these ads to cover the original content of the website. Such characteristics classify this program into the category of adware viruses. So, if you notice this questionable gaming extension on your computer, we would highly recommend you to get rid of it as soon as possible. You can use a reputable anti-malware program like Reimage to remove Mahjong World Contest even faster. Nevertheless, if you are yet undecided, whether you should really uninstall this program, let us introduce you to a few other negative features of this application.

Mahjong World Contest is a deceptive program in a sense that it acts as a gaming application but, in fact, injects sponsored advertisements into the hijacked browser to generate revenue. Therefore, if you suspect you have been infected with this adware, you should avoid clicking on the ads labeled as “Ads by Mahjong World Contest”, “Powered by Mahjong World Contest” that appear in your browsing results, or on any ads featuring similar slogans. Since this adware is designed to bring money for its creators, no wonder its ads are so pushy and intrusive. Through these ads, Mahjong World Contest redirect the users to the sponsored websites, increase their traffic and, in return, receive payment. Sadly, but there is no guarantee that these websites are safe; therefore, clicking on Mahjong World Contest ads may result in further contamination of your computer with other malware, viruses, and Trojans. What is more, this adware may track the user’s activity on the web. It may collect data about your visited websites, search queries and use it to generate user-targeted ads, in this way increasing the chance of them being clicked upon. Such advertising is more than unfair, regarding the users; therefore, we think it should not be taken granted. We hope t helped you to make up your mind about the Mahjong World Contest removal, and you are ready to look at some tips on how to do that safely and efficiently. But before that some information for those who are not infected yet and want to avoid this virus from entering their computers.

How can I avoid having my computer hijacked by this virus?

Adware like Mahjong World Contest is usually distributed in software packages along with some freeware or shareware programs. It stealthily installs without the user’s explicit permission. Distributors of various potentially unwanted programs take advantage of the fact that computer users commonly avoid using “Advanced” and “Custom” installation options and hide their malicious programs in these settings. The problem is that you cannot see what additional programs are being installed if you use “Quick” or “Recommended” settings. So, to avoid unwanted programs from entering your PC, you should always use the advanced options and deselect any applications that might seem suspicious. You should also be cautious about visiting and downloading your software from unreliable websites.

Tips on Mahjong World Contest virus removal:

Manual Mahjong World Contest removal is not very difficult; however, you should remember the method through which this adware has entered your computer. The chances are that some other potentially unwanted programs may residing on your computer that you do not know of. Therefore, the most optimal solution would be to remove it automatically, using some trustworthy anti-malware suite. Remember to keep your antivirus updated to ensure the best virus detection and elimination results. Nevertheless, if you decide to remove Mahjong World Contest manually, you can follow our step-by-step virus removal guide provided below.

You can remove Mahjong World Contest automatically with a help of one of these programs: Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus, Malwarebytes Anti Malware. We recommend these applications because they can easily delete potentially unwanted programs and viruses with all their files and registry entries that are related to them.

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall Mahjong World Contest ads. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.

More information about this program can be found in Reimage review.

More information about this program can be found in Reimage review.
Mahjong World Contest ads snapshot
MahjongWorldContest-ads

Manual Mahjong World Contest ads Removal Guide:

WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Remove Mahjong World Contest from Windows systems

Reimage is a tool to detect malware.
You need to purchase Full version to remove infections.
More information about Reimage.

  1. Click Start Control Panel Programs and Features (if you are Windows XP user, click on Add/Remove Programs). 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. 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 Mahjong World Contest and related programs
    Here, look for Mahjong World Contest or any other recently installed suspicious programs.
  4. Uninstall them and click OK to save these changes. Right click on each of suspicious entries and select 'Uninstall'
WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Remove Mahjong World Contest from Mac OS X system

Reimage is a tool to detect malware.
You need to purchase Full version to remove infections.
More information about Reimage.

  1. If you are using OS X, click Go button at the top left of the screen and select Applications. Cick 'Go' and select 'Applications'
  2. Wait until you see Applications folder and look for Mahjong World Contest or any other suspicious programs on it. Now right click on every of such entries and select Move to Trash. Click on every malicious entry and select 'Move to Trash'
WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Remove Mahjong World Contest from Internet Explorer (IE)

Reimage is a tool to detect malware.
You need to purchase Full version to remove infections.
More information about Reimage.

  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. Click on menu icon and select 'Manage add-ons'
  2. You will see a Manage Add-ons window. Here, look for Mahjong World Contest and other suspicious plugins. Disable these entries by clicking Disable: Right click on each of malicious entries and select '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. Delete malicious URL, enter your desired domain name and 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 Mahjong World Contest removal. Go to 'Advanced' tab and click on 'Reset' button. Now select 'Delete personal settings' and click on 'Reset' button again
WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Remove Mahjong World Contest ads from Microsoft Edge

Reimage is a tool to detect malware.
You need to purchase Full version to remove infections.
More information about Reimage.

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. Go to Settings and select 'Choose what to clear'
  4. Here, select all what you want to remove and click Clear. Select 'Clear' button
  5. Now you should right-click on the Start button (Windows logo). Here, select Task Manager. Open the start menu and 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. Right-click 'Microsoft Edge' and select 'Go to details' Select 'More details' if 'Go to details' option fails to show up
  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. Find Microsoft Edge entries and select 'End Task'

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. Go to Microsoft Edge folder on your computer, right-click every entry and click 'Delete'
  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. Find Windows PowerShell, right-click it and select '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}
    Copy and paste a required command and press 'Enter'

Once these steps are finished, Mahjong World Contest should be removed from your Microsoft Edge browser.

WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Remove Mahjong World Contest from Mozilla Firefox (FF)

Reimage is a tool to detect malware.
You need to purchase Full version to remove infections.
More information about Reimage.

  1. Remove dangerous extensions
    Open Mozilla Firefox, click on the menu icon (top right corner) and select Add-ons Extensions. Click on menu icon and select 'Add-ons'
  2. Here, select Mahjong World Contest and other questionable plugins. Click Remove to delete these entries. Select 'Extensions' and look for malicious entries. Click 'Remove' to get rid of each of them
  3. Reset Mozilla Firefox
    Click on the Firefox menu on the top left and click on the question mark. Here, choose Troubleshooting Information. Click on menu icon and then on '?'. Select '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 Mahjong World Contest removal. Click on 'Reset Firefox' button for a couple of times
WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Remove Mahjong World Contest from Google Chrome

Reimage is a tool to detect malware.
You need to purchase Full version to remove infections.
More information about Reimage.

  1. Delete malicious plugins
    Open Google Chrome, click on the menu icon (top right corner) and select Tools Extensions. Click on menu icon. Select 'Tools' and 'Extensions'
  2. Here, select Mahjong World Contest and other malicious plugins and select trash icon to delete these entries. Look for malicious entries and delete each of them by clicking on the Trash bin icon
  3. Click on menu icon again and choose Settings Manage Search engines under the Search section. When in 'Settings', select 'Manage search engines...'
  4. When in Search Engines..., remove malicious search sites. You should leave only Google or your preferred domain name. Click 'X' to remove malicious URLs
  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. When in 'Settings', scroll down to 'Reset browser settings' button and click on it
  7. Click Reset to confirm this action and complete Mahjong World Contest removal. Click on 'Reset' button to complete your removal
WindowsMac OS XInternet ExplorerMicrosoft EdgeFirefoxGoogle ChromeSafari

Remove Mahjong World Contest from Safari

Reimage is a tool to detect malware.
You need to purchase Full version to remove infections.
More information about Reimage.

  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. Click on 'Safari' and select 'Preferences'
  2. Here, select Extensions and look for Mahjong World Contest or other suspicious entries. Click on the Uninstall button to get rid each of them. Go to 'Extensions' and uninstall malicious add-ons
  3. Reset Safari
    Open Safari browser and click on Safari in menu section at the top left of the screen. Here, select Reset Safari.... Click on 'Safari' and 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 Mahjong World Contest removal process. Select all options and click on 'Reset' button
After uninstalling this potentially unwanted program (PUP) and fixing each of your web browsers, we recommend you to scan your PC system with a reputable anti-spyware. This will help you to get rid of Mahjong World Contest registry traces and will also identify related parasites or possible malware infections on your computer. For that you can use our top-rated malware remover: Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware.

About the author

Julie Splinters
Julie Splinters - Malware removal specialist

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  • JackFinn

    Ohh I love mahjong!!

  • deletingitrightnow

    Incredible. Ive been playing this for a month 😀