How Do I Remove ContainerTag.js Completely From the Computer?

A few days ago, an annoying pop-up “What to do with containertag.js” started to occur on some websites when I used IE web browser. It has been showing up at the bottom of the screen several times and I have no idea how to get rid of it. The pop-up is from and it gives me three options: save/save as/ or cancel. I always click on cancel or close the pop-up because I’ve never heard that item before. What is it and how to remove it completely from my browser?


Download-iconAutomatically Remove containertag.js Now!



What is ContainerTag.js and why it shows up your PC?


ContainerTag.js is an adware variant or potentially unwanted program that can affect browsers including Microsoft Edge, Internet Explorer, Google Chrome, Mozilla Firefox and other popular ones and make changes on the browser settings or other Windows settings with the purposes of display advertising. This PUP is usually used to install the browsers and display lots of popping messages, blinking boxes, notifications, and ads.

According to Tradedoubler,

A Container Tag is a single piece of JavaScript code that is implemented on a merchant’s web site. Container tags make it easier for merchants to add, change, or remove marketing tags, because they provide a delivery mechanism for the tags they contain. The changes are done in one single place within the Container Tag interface, instead of writing code for tags page by page on the web site.

Tags are useful to merchants because they can collect data on a website and are incorporated into the HTML/JavaScript code delivered by a web browser when a web page loads. In addition, they can integrate third-party content, such as ads, into a website and set cookies on the visitor’s web page.


Thanks to AlexS in webroot forum, we know some of the domains related to the .js file are:


If you find ContainerTag.js pop-up keeps showing up when using the web browsers, it seems to indicate an issue with an advertising agency.

In addition to the reason mentioned above, the unwanted pop-up ads may be caused by certain browser toolbars, extensions/add-ons or other unwanted programs that get installed without your knowledge when you download and install a desire program from the Internet. Many freeware are bundled with various additional items like adware, spyware, browser hijackers, etc. If you pay no attention when downloading and installing a free application from the web, some PUPs may enter the PC and tamper with the browser settings and other system settings. If Windows HOSTS file is affected, browser problems like browser hijacking, redirection and tons of pop-ups may occur.

The HOSTS file is a plain text file that maps hostnames to IP addresses. DNS stands for Domain Name System. It is a system facility that can assist in addressing network nodes in a computer network and serves the function of translating human-friendly hostnames into numeric protocol addresses called IP addresses that identify and locate a host in an IP network.




Image by technet

If you want to block the unwanted website which brings ContainerTag.js pop-up, try blocking that website with HOSTS file. This may help fix the problem.


Note: Though ContainerTag.js pop-up itself may not harm your computer, we don’t suggest you save the file. This annoying pop-up typically indicates that your browser is infected with certain PUP or even malware. Moreover, a container tag is able to collect your browsing data and send it to third parties for commercial purposes, which may cause your personal information to be stolen or misused. Thus, we strongly suggest you download and use a professional remover to remove it immediately.




How to get rid of ContainerTag.js from your computer completely?

The instructions below show you how to remove the annoying pop-up from the browsers thoroughly.  By following the solutions provided in this post, you will be able to keep away from the unwanted pop-ups and protect the PC effectively.


Solution 1: Manually remove ContainerTag.js (Time-consuming)


Solution2: Automatically remove ContainerTag.js with anti-malware software (Recommended)


Solution 1: Manually remove ContainerTag.js


Difficulty: Difficult

Time Required: Minutes or even hours

Step1:  Block with your HOSTS file


Windows 10/8

  1. If you use Windows 10, type “Notepad” in the search box next to the Windows Start button in the bottom left of the screen and Notepad will be found in the search results list. (As shown below)



If you’re using Windows 8, press Windows key and type “Notepad” in the search box on the right side of the screen. Notepad should be at the list of programs under it.

  1. Right click on Notepad and select Run as administrator.
  1. Click File in the menu bar at the top of Notepad and select Open.


  1. Enter C:WindowsSystem32Driversetc in the File name line and click on Open button to open the hosts file. It’ll look like this:

Click the dropdown box in the lower right hand corner that is set to Text Documents (*.txt) and select All Files (*.*)

  1. To block ContainerTag.js, you can block its site with your HOSTS file. Add the following line to the HOSTS file and save the changes.

  1. Close Notepad.

Windows 7/Vista/XP

  1. Press Windows + R to open Run key, type the following path in the Run box and then click on OK button.



  1. The “etc” folder opens and you’ll find the HOSTS file. Right click on it and use Notepad to open the file.
  1. Add the following line to the HOSTS file and save the changes.

  1. Close Notepad.


Friendly reminder:  

Many potentially unwanted programs or other malware may make modifications on your HOSTS file without permission so as to redirect you to specific web sites for generating revenue or other purposes. We advise you to keep an advanced anti-malware on the PC to prevent and remove such malware effectively.



Step2:  Remove suspicious browser extensions/add-ons


Internet Explorer

  1. Click on Tools or the IE menu button, and then select Manage Add-ons.


  1. In the Manage Add-ons window, click on Toolbars and Extensions under Add-on Types. Then select All add-ons under Show. All the toolbars and add-ons installed on IE will be showed on the right panel.


  1. If any unknown add-on is found on the list, select it and click on the Remove button.


Edge browser

If you use Microsoft Edge browser, follow the guide: Adding and removing extensions for Microsoft Edge to remove the unwanted extension.


Mozilla Firefox

  1. Click on Tools on the menu bar or the Mozilla Firefox menu button at the top right corner of the browser window and then select Add-ons.


  1. In the Add-ons Manager page, click on Extensions.
  2. Find any unfamiliar add-on that may cause ContainerTag.js pop-up and remove it by clicking on Remove button next to it.



Google Chrome

  1. Click on the Chrome menu button at the top right corner of the browser window and then select More Tools -> Extensions.


  1. Find any extension that was installed recently without permission and click chrome-trashcan-icon to remove it.



  1. In the Opera menu, select Extensions -> Manage Extensions. Or you can press Ctrl + Shift + E to open the browser extensions settings. A new page where you can view your extensions and make changes to them will be displayed.


  1. Find the one that may be associated with ContainerTag.js and click on Disable or Remove button.




  1. Click on Safari Menu -> Preferences….


  1. Click on the Extensions tab.
  1. Choose the extension that is strange to you and then click the Uninstall button.




Note: If the uninstall option of the unwanted extension/toolbar becomes greyed out, or an extension keeps coming back after being removed, you should consider using a professional malware removal tool to detect and remove the annoying toolbars/extensions quickly and completely.


Step3:  Clear browsing cookies and caches

Internet Explorer

  1. Click on the IE menu button (gear button), and then select Safety -> Delete browsing history…. Or you can press Ctrl + Shift + Del to open the Delete browsing history window quickly.


  1. In the window, tick the checkboxes of Cookies and website data, Download history, Temporary Internet files and website files and other items. And then click on Delete button.


  1. IE will finish deleting the selected browsing history in seconds. Restart your browser and see if ContainerTag.js pop-up still occurs.


Edge browser

  1. Click on the at the upper right corner of the browser window to open more options and then select Settings -> Choose what to clear under Clear browsing data. Or press Ctrl + Shift + Del to open the clear browsing data menu quickly.
  1. Select the options like Cookies and saved website data and cached data and files then click on Clear button.


Mozilla Firefox

  1. Open Firefox, press Ctrl + Shift + Del or click on History on the menu bar and then select Clear recent history…. The Clear recent history window will open.
  1. From Time range to clear: list, click on Everything or a time range that the browser was free of ContainerTag.js pop-up.


  1. Click on the arrow button next to Details and many items will be showed. Tick the boxes of Browsing & Download history, Cookies, Cache and other relevant items and then click on Clear Now button.



Google Chrome

  1. Click on the Chrome menu button in the top right corner of the browser window and then select More Tools -> Clear browsing data…. Or use the combination keys Ctrl + Shift + Del to open the clear browsing data page quickly.


  1. In the window, select a proper time range and then check the boxes of cookies and other site and plugin data, cached images and files, download history and other items. Then click on Clear browsing data button.


  1. The selected browsing data will be deleted soon. Restart your Chrome and see if the annoying pop-up has gone.



  1. Click on Opera menu and select More tools –> Clear browsing data. Or press Ctrl + Shift + Del to open the History tab immediately.


  1. Select Cookies and other site data and other terms that need to remove, and then click Clear browsing data to delete the cookies and other browsing data.


  1. Once done, restart your Opera browser and see if the ContainerTag.js pop-up problem has been fixed.



  1. Open the Preferences -> Privacy.
  1. Click Remove ALL Website Data… or the Details button alongside the heading that reads X Websites Stored Cookies and Other Data.


  1. You can then prune the list manually by selecting an individual site and clicking the Remove button, or delete all cookies and cache by clicking the Remove All button.



Step4: Reset your browser settings (Optional)


Internet Explorer

  1. Click on Tools or the Tools button (gear icon) and select Internet Options.


  1. Under the Advanced tab, then click on Reset….


  1. Check the box of Delete personal settings and then click on Reset button.


  1. You must restart the computer for these changes to take effect. ContainerTag.js pop-up may be gone from IE now.


Edge browser

  1. Locate to the following folder and clear everything inside it, including favorites and all.


  1. Right-click on the Start menu and choose “Windows PowerShell (Admin)”. Copy and paste the following code inside PowerShell and press Enter:

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


Google Chrome

  1. Click on Chrome menu button (three-lined button) at the upper right corner of the browser window and select Settings.


  1. Scroll down to the end of the page and click on the Show Advanced Settings….
  2. Click on Reset browser settings.


  1. Click on Reset button to restore the Chrome’s settings to the original. You may find ContainerTag.js pop-up disappear once Chrome is started again.



Mozilla Firefox

  1. Click on Help on the menu bar and select Troubleshoot Information. (Note: If the menu bar doesn’t show up, right click on the top bar and tick the Menu Bar option.)


Alternatively, click on the Firefox menu button in the upper right corner of the browser and then click on the question button then select Troubleshoot Information.


  1. Click on the Refresh Firefox .


  1. Click on Refresh button to confirm the changes.




  1. Open Opera and then enter opera://about in the address bar to open the About Opera page.
  1. In the page, you will see the Paths section. The paths of cache and profile will be showed there. Note them and close Opera.


Here are the paths in my Opera :

C:UserswinaeroAppDataRoamingOpera SoftwareOpera Stable

C:UserswinaeroAppDataLocalOpera SoftwareOpera Stable

  1. Locate to the paths saw in the About page and delete these two folders: Profile and Cache.
  1. Run Opera and all its settings will be reset to the original settings.



  1. Open Safari, click on Safari in your Safari menu and select Reset Safari….in the drop-down menu that appears.


  1. A warning dialog will appear detailing the items that will be removed. Click Reset button to complete the process.


  1. Your Safari browser will restart automatically.



Solution2: Automatically remove ContainerTag.js with anti-malware software


Difficulty: Easy

Time Required: Less than 5 minutes


Run SpyHunter to scan your computer and delete ContainerTag.js


SpyHunter is an anti-malware program that can detect and remove ContainerTag.js fully. This tool helps users protect their computer from browser hijackers, adware, spyware and other malware effectively. When you experience unexpected pop-ups when using web browsers, follow the steps below to find and get rid of the infections using SpyHunter:

  1. Download SpyHunter by clicking on the following button.


  1. Run the downloaded file to start the installation setup. Follow the instructions on the screen to select the language -> accept the EULA and Privacy Policy and the installation will be completed quickly within minutes -> Click Exit button when the setup is successful and SpyHunter will launch automatically soon.


  1. Once started, SpyHunter begins scanning your system for malware. The scanning may take a few minutes to finish. If you need to perform a new scanning, click on Scan Computer Now button.


  1. When the tool has finished scanning the system, it lists all the threats detected in the scan results. You can see brief info and related infections of the threats clearly. Click on the Fix Threats button to wipe out all the infections.



Note:  SpyHunter can free scan and show you all the threats in your system. You need to purchase the full version of SpyHunter to completely clear ContainerTag.js and other infections.



Alternative anti-malware software recommended: Plumbytes


In addition to SpyHunter, we also recommend you Plumbytes, a utility that can find and remove ContainerTag.js as well as other PUPs completely. It is good at detecting and deleting adware, harmful toolbars and other malware. With it, you can enjoy safe web browsing and secure online privacy. Follow the steps below to delete the infections within your system by using Plumbytes:

  1. download-icon Click here to download Plumbytes.
  2. Run the downloaded file to start the installation setup. Follow the instructions on the screen complete the installation. The installation process usually takes merely a few seconds.


  1. Once installed, Plumbytes starts to scan your system for malware automatically. The scanning may last for several minutes.


  1. When the scan is completed, all the threats on your PC are displayed in the scan results. You can see ContainerTag.js and other threats are detected, click on the REMOVE SELECTED button to remove them.



  1. This is also a free malware detection utility. You need to purchase its full version to completely clear all the infections.


information_iconImportant note:

If you are not familiar with HOSTS file and not sure about the modifications you made in it, please use a professional malware removal tool to do the task automatically, download a ContainerTag.js pop-up fixer and run it to detect and delete the threats thoroughly with ease.


Download-iconDownload containertag.js Removal Tool Now!



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The following video offers a complete guide for ContainerTag.js removal. You’d better watch it in full-screen mode!

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