Ads not by this site pop-up removal guide (2020 version)

‘Ads not by this site’ virus Removal Guide

What is ‘Ads not by this site’ virus?

“Ads not by this site” – adware that can interrupt browsing sessions with notifications while visiting places such as Facebook, Wikipedia, Google

"Ads not by this site" adware"Ads not by this site" is an adware program that travels in freeware or shareware packages

“Ads not by this site” is an adware[1] app that shows annoying pop-ups mostly due to the Vid-Saver extension. Intrusive advertisements can start appearing when you are visiting popular sources such as Google, Wikipedia, Facebook, and others. Such activity can occur on any type of web browser app, including Google Chrome, Mozilla Firefox, Internet Explorer, Microsoft Edge, and Safari. “Ads not by this site” virus can force redirects to other affiliate sources that are filled with attractive-looking deals and are placed there to attract the visitor's attention. However, this is not all of the activities that the adware is capable of. If you want to learn more about this PUP, keep reading the article.

Name “Ads not by this site”
Type/category Adware/potentially unwanted program
Browsers affected This suspicious product can appear on any type of web browser, including Google Chrome, Mozilla Firefox, Internet Explorer, Microsoft Edge, and Safari
Activities The adware can change browser settings such as the homepage and new tab URL, start displaying advertising content during browsing sessions, redirecting the user to affiliate sources, collect browsing-related information, infiltrate other PUPs
Removal You can get rid of the potentially unwanted app with the help of automatical software or by completing the manual guide that has been added to the end of this page
Repair If your system has experienced some type of compromisation, try repairing things with FortectIntego

“Ads not by this site” is an untrusted application that infiltrates computer systems through unprotected sources. The adware mostly uses a deceptive technique known as software bundling. The developers target users who have weak computer protection and fill regular software packages with adware that ends up on the computer system unnoticed.

Once “Ads not by this site” appears on the machine, it will start showing some symptoms sooner or later. First of all, you might spot unexpected changes in the web browser's settings such as the homepage and new tab URL. Afterward, you might see that your browsers are filled with questionable extensions, add-ons, and plug-ins.

Continuously, you will likely see an increased amount of advertising when you are browsing the Internet via popular sources. The ads will come marked as “Ads not by this site” and you will be able to recognize the ad-supported application from this specific mark. As time flies, the advertising will only increase if you do not deal with the PUP as soon as possible.

Besides, “Ads not by this site” pop-up ads might provide you with suspicious deals and offers that are placed to benefit only the developers but not the user. These people can offer you to buy some rogue security products or other services for a big price. You should decline any suggestions and deals that come from this app.

"Ads not by this site" "Ads not by this site" is adware that can redirect the user to affiliate websites some of which might distribute malware

To add, “Ads not by this site” virus can provide you with various surveys and questionnaires that seek to capture personal information. If you are asked to fill in your credentials or any personally-identifiable details in order to claim some type of a prize, do not do that as there truly is no reward and you are likely to get scammed.

Furthermore, “Ads not by this site” will likely start redirecting you to affiliate sources where additional offers and deals might be provided to you. However, there is one thing potentially dangerous about the redirecting sessions. This type of activity might force you to land on malware-laden locations and result in an infection on your computer.

Additionally, there is something else you should know about “Ads not by this site” and its tasks. This adware might start collecting your browsing data and online activity history by injecting HTTP cookies, beacons, and pixels into your web browsers. Later on, the developers can share the data with third-parties for receiving income.

If all of these activities increase from time to time, “Ads not by this site” might start eating your computer's resources, including the GPU and CPU power. Later on, you will likely find your web browser struggling to complete even simple actions and also your software loading slower, computer system freezing or crashing.

"Ads not by this site" virus"Ads not by this site" is an adware program that displays intrusive advertisements while browsing on popular networks and websites such as Google, Facebook, Wikipedia

You should remove “Ads not by this site” virus from your Windows or macOS computer system to avoid all of the mentioned activities and risks. The process can be completed by employing reliable antimalware software or by using manual step-by-step guidelines. Also, try using FortectIntego if you find any machine corruption or compromisation.

Another reason to perform the “Ads not by this site” removal from your machine is the risk that this adware will not end up alone on your computer system. Often, ad-supported applications carry other adware, browser hijackers, tech support scams, and rogue security software that end up causing more computer and browsing interruption.

The appearance of adware programs

Beware that you can get infected with ad-supported applications through various free programs that are involved in the distribution of such apps in exchange for money. That is why you should be very careful when downloading shareware and freeware,[2] like movies, games, and other software from websites such as,, and

According to security experts from,[3] you should select only Custom or Advanced installation when downloading freeware to your computer as this way you will get the chance of protecting your incoming downloads. You will be able to view the whole list of pending objects and opt-out of those products that look suspicious to you.

Continuously, adware programs can camouflage as fake flash player updates and appear to you while browsing on third-party websites. Before downloading any type of update that you are offered on the Internet, you should check if there is any official release of it. Also, you should have an antivirus tool operating as it will also inform you about suspicious objects.

The removal process of “Ads not by this site” virus

“Ads not by this site” virus removal can be completed with the help of automatical software. Employing this type of product is a good idea as it allows you to get rid of the threat within a few minutes of time and ensures that all suspicious objects have been eliminated together.

However, you can also remove “Ads not by this site” with the help of the manual step-by-step guidelines that have been added to the end of this article. These steps require more of the user's attention and effort. There you will learn how to clean both your computer's operating system and web browser applications such as Google Chrome, Mozilla Firefox, Microsoft Edge, Internet Explorer, and Safari.

You may remove virus damage with a help of FortectIntego. SpyHunter 5Combo Cleaner and Malwarebytes are recommended to detect potentially unwanted programs and viruses with all their files and registry entries that are related to them.

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Fortect Happiness
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Compatible with Microsoft Windows Compatible with macOS
What to do if failed?
If you failed to fix virus damage using Fortect Intego, submit a question to our support team and provide as much details as possible.
Fortect Intego has a free limited scanner. Fortect Intego offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Fortect, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Intego, try running Combo Cleaner.

Getting rid of ‘Ads not by this site’ virus. Follow these steps

Uninstall from Windows

Instructions for Windows 10/8  machines:

  1. Enter Control Panel into Windows search box and hit Enter or click on the search result.
  2. Under Programs, select Uninstall a program. Uninstall from Windows 1
  3. From the list, find the entry of the suspicious program.
  4. Right-click on the application and select Uninstall.
  5. If User Account Control shows up, click Yes.
  6. Wait till uninstallation process is complete and click OK. Uninstall from Windows 2

If you are Windows 7/XP user, proceed with the following instructions:

  1. Click on Windows Start > Control Panel located on the right pane (if you are Windows XP user, click on Add/Remove Programs).
  2. In Control Panel, select Programs > Uninstall a program. Uninstall from Windows 7/XP
  3. Pick the unwanted application by clicking on it once.
  4. At the top, click Uninstall/Change.
  5. In the confirmation prompt, pick Yes.
  6. Click OK once the removal process is finished.

Delete from macOS

To clean macOS from suspicious products and the adware itself, you should take a look at the below-provided guiding steps

Remove items from Applications folder:

  1. From the menu bar, select Go > Applications.
  2. In the Applications folder, look for all related entries.
  3. Click on the app and drag it to Trash (or right-click and pick Move to Trash) Uninstall from Mac 1

To fully remove an unwanted app, you need to access Application Support, LaunchAgents, and LaunchDaemons folders and delete relevant files:

  1. Select Go > Go to Folder.
  2. Enter /Library/Application Support and click Go or press Enter.
  3. In the Application Support folder, look for any dubious entries and then delete them.
  4. Now enter /Library/LaunchAgents and /Library/LaunchDaemons folders the same way and terminate all the related .plist files. Uninstall from Mac 2

Remove from Microsoft Edge

To reverse Microsoft Edge back to its primary state and get rid of all the bogus extensions added, complete the following guidelines

Delete unwanted extensions from MS Edge:

  1. Select Menu (three horizontal dots at the top-right of the browser window) and pick Extensions.
  2. From the list, pick the extension and click on the Gear icon.
  3. Click on Uninstall at the bottom. Remove extensions from Edge

Clear cookies and other browser data:

  1. Click on the Menu (three horizontal dots at the top-right of the browser window) and select Privacy & security.
  2. Under Clear browsing data, pick Choose what to clear.
  3. Select everything (apart from passwords, although you might want to include Media licenses as well, if applicable) and click on Clear. Clear Edge browsing data

Restore new tab and homepage settings:

  1. Click the menu icon and choose Settings.
  2. Then find On startup section.
  3. Click Disable if you found any suspicious domain.

Reset MS Edge if the above steps did not work:

  1. Press on Ctrl + Shift + Esc to open Task Manager.
  2. Click on More details arrow at the bottom of the window.
  3. Select Details tab.
  4. Now scroll down and locate every entry with Microsoft Edge name in it. Right-click on each of them and select End Task to stop MS Edge from running. Reset MS Edge

If this solution failed to help you, you need to use an advanced Edge reset method. Note that you need to backup your data before proceeding.

  1. Find the following folder on your computer: C:\\Users\\%username%\\AppData\\Local\\Packages\\Microsoft.MicrosoftEdge_8wekyb3d8bbwe.
  2. Press Ctrl + A on your keyboard to select all folders.
  3. Right-click on them and pick Delete Advanced MS Edge reset 1
  4. Now right-click on the Start button and pick Windows PowerShell (Admin).
  5. When the new window opens, copy and paste the following command, and then press Enter:

    Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\\AppXManifest.xml” -Verbose Advanced MS Edge reset 2

Instructions for Chromium-based Edge

Delete extensions from MS Edge (Chromium):

  1. Open Edge and click select Settings > Extensions.
  2. Delete unwanted extensions by clicking Remove. Remove extensions from Chromium Edge

Clear cache and site data:

  1. Click on Menu and go to Settings.
  2. Select Privacy, search and services.
  3. Under Clear browsing data, pick Choose what to clear.
  4. Under Time range, pick All time.
  5. Select Clear now. Clear browser data from Chroum Edge

Reset Chromium-based MS Edge:

  1. Click on Menu and select Settings.
  2. On the left side, pick Reset settings.
  3. Select Restore settings to their default values.
  4. Confirm with Reset. Reset Chromium Edge

Remove from Mozilla Firefox (FF)

Remove dangerous extensions:

  1. Open Mozilla Firefox browser and click on the Menu (three horizontal lines at the top-right of the window).
  2. Select Add-ons.
  3. In here, select unwanted plugin and click Remove. Remove extensions from Firefox

Reset the homepage:

  1. Click three horizontal lines at the top right corner to open the menu.
  2. Choose Options.
  3. Under Home options, enter your preferred site that will open every time you newly open the Mozilla Firefox.

Clear cookies and site data:

  1. Click Menu and pick Settings.
  2. Go to Privacy & Security section.
  3. Scroll down to locate Cookies and Site Data.
  4. Click on Clear Data…
  5. Select Cookies and Site Data, as well as Cached Web Content and press Clear. Clear cookies and site data from Firefox

Reset Mozilla Firefox

If clearing the browser as explained above did not help, reset Mozilla Firefox:

  1. Open Mozilla Firefox browser and click the Menu.
  2. Go to Help and then choose Troubleshooting Information. Reset Firefox 1
  3. Under Give Firefox a tune up section, click on Refresh Firefox…
  4. Once the pop-up shows up, confirm the action by pressing on Refresh Firefox. Reset Firefox 2

Remove from Google Chrome

To get rid of suspicious products from Google Chrome, you should apply the following instructions

Delete malicious extensions from Google Chrome:

  1. Open Google Chrome, click on the Menu (three vertical dots at the top-right corner) and select More tools > Extensions.
  2. In the newly opened window, you will see all the installed extensions. Uninstall all the suspicious plugins that might be related to the unwanted program by clicking Remove. Remove extensions from Chrome

Clear cache and web data from Chrome:

  1. Click on Menu and pick Settings.
  2. Under Privacy and security, select Clear browsing data.
  3. Select Browsing history, Cookies and other site data, as well as Cached images and files.
  4. Click Clear data. Clear cache and web data from Chrome

Change your homepage:

  1. Click menu and choose Settings.
  2. Look for a suspicious site in the On startup section.
  3. Click on Open a specific or set of pages and click on three dots to find the Remove option.

Reset Google Chrome:

If the previous methods did not help you, reset Google Chrome to eliminate all the unwanted components:

  1. Click on Menu and select Settings.
  2. In the Settings, scroll down and click Advanced.
  3. Scroll down and locate Reset and clean up section.
  4. Now click Restore settings to their original defaults.
  5. Confirm with Reset settings. Reset Chrome 2

Delete from Safari

Remove unwanted extensions from Safari:

  1. Click Safari > Preferences…
  2. In the new window, pick Extensions.
  3. Select the unwanted extension and select Uninstall. Remove extensions from Safari

Clear cookies and other website data from Safari:

  1. Click Safari > Clear History…
  2. From the drop-down menu under Clear, pick all history.
  3. Confirm with Clear History. Clear cookies and website data from Safari

Reset Safari if the above-mentioned steps did not help you:

  1. Click Safari > Preferences…
  2. Go to Advanced tab.
  3. Tick the Show Develop menu in menu bar.
  4. From the menu bar, click Develop, and then select Empty Caches. Reset Safari

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 ‘Ads not by this site’ 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: FortectIntego, SpyHunter 5Combo Cleaner or Malwarebytes.

How to prevent from getting adware

Stream videos without limitations, no matter where you are

There are multiple parties that could find out almost anything about you by checking your online activity. While this is highly unlikely, advertisers and tech companies are constantly tracking you online. The first step to privacy should be a secure browser that focuses on tracker reduction to a minimum.

Even if you employ a secure browser, you will not be able to access websites that are restricted due to local government laws or other reasons. In other words, you may not be able to stream Disney+ or US-based Netflix in some countries. To bypass these restrictions, you can employ a powerful Private Internet Access VPN, which provides dedicated servers for torrenting and streaming, not slowing you down in the process.

Data backups are important – recover your lost files

Ransomware is one of the biggest threats to personal data. Once it is executed on a machine, it launches a sophisticated encryption algorithm that locks all your files, although it does not destroy them. The most common misconception is that anti-malware software can return files to their previous states. This is not true, however, and data remains locked after the malicious payload is deleted.

While regular data backups are the only secure method to recover your files after a ransomware attack, tools such as Data Recovery Pro can also be effective and restore at least some of your lost data.

About the author
Olivia Morelli
Olivia Morelli - Ransomware analyst

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