Reaction Setup Adware “Virus” Removal

Can’t Remove Reaction Setup ads? This page includes detailed ads by Reaction Setup Removal instructions!

The Reaction Setup utility falls under the Adware umbrella. It’s an intrusive ad-generating parasite. The adware uses trickery to sneak into your OS unnoticed. Once on board, it wastes no time and corrupts your web browsers. Chrome, Firefox, Edge, Safari, Opera, there is no immune program. The parasite takes control over them and turns your browsing experience into a nightmare. The Reaction Setup adware injects various ads on every website you load. It is also capable of redirecting your web traffic to sponsored pages. The parasite even dares pause your online videos for commercial breaks. Every time you click on its ads, the parasite gets paid. So, it has no intentions of limiting the number of ads you get presented with. Quite the contrary. The adware floods your browser with advertisements. This parasite knows no boundaries. It gets more and more aggressive with each passing day. The parasite tends to get out of control. Unfortunately, this puts you in a bad position. The aggressive marketing takes a toll on your device. The adware causes your browser to freeze and crash frequently. You may experience system crashes. Your Internet connection, too, becomes slow and unstable. The parasite prevents you from using your computer normally. This nasty invader ruins your browsing experience. Do not put up with it. Don’t tolerate the intruder. Take immediate action against it. Remove the Reaction Setup adware the first chance you get!

Remove Reaction Setup

How did I get infected with?

The Reaction Setup adware cannot hack into computers. This parasite is not that advanced. It’s a simple application. And just like any app, it follows certain rules of infiltration. The adware cannot enter your OS without your, the user’s, approval. No permission, no admission! Yet, as you can imagine, there is a catch. The adware doesn’t need to ask openly. It steals your approval through trickery. The Reaction Setup adware uses torrents and spam emails. It lurks behind software bundles and corrupted links. The parasite may also arrive as a fake update. There are numerous malware distribution strategies. They deliver the parasite to your system. Yet, they don’t install it. You do that! You install the parasite by not paying attention! The Reaction Setup adware tricks its victims into installing it. All it needs to succeed is one second of carelessness. Change your habits. Don’t let other parasites trick you. Download your software from reputable sources only. When installing an app, pay attention to the fine print. When available, use the advanced installation option. Under it, you would be able to deselect all bonus programs that are about to get installed. These unknown apps, more other than not, are parasites. Deselect them! Also, before you click on that “Accept” button, read the terms and conditions. If you cannot spare enough time to read the whole document, scan it with an online EULA analyzer. If you detect anything out of the ordinary, abort the installation immediately!

Why is this dangerous?

The Reaction Setup adware is very intrusive. Yet, it’s equally dangerous. The adware opens your browser to surveillance and targeted ads. The parasite spies on you and uses the collected data against you. The Reaction Setup adware monitors your every online step. Even the incognito mode of your browser cannot hide you. The collected data may not strike you as too sensitive, but a capable advertiser needs very little to successfully target you. What if this advertiser has bad intentions? Numerous crooks use the Reaction Setup adware to run their schemes. The crooks prepare customized ads and force them on you. They show you what you want to see, but when you click, bad things happen. The crooks want to either convince you to install rogue programs or to trick you into revealing sensitive information. As for the adware, it works to their advantage. The parasite turns you into an easy target. The adware is like a pain in the neck. The more you tolerate it, the worse your situation becomes. Do not put up with this intruder. Do what’s best for you and your computer’s well-being. Remove the adware as soon as possible.

How to Remove Reaction Setup virus

The Reaction Setup infection is specifically designed to make money to its creators one way or another. The specialists from various antivirus companies like Bitdefender, Kaspersky, Norton, Avast, ESET, etc. advise that there is no harmless virus.

If you perform exactly the steps below you should be able to remove the Reaction Setup infection. Please, follow the procedures in the exact order. Please, consider to print this guide or have another computer at your disposal. You will NOT need any USB sticks or CDs.

STEP 1: Track down Reaction Setup in the computer memory

STEP 2: Locate Reaction Setup startup location

STEP 3: Delete Reaction Setup traces from Chrome, Firefox and Internet Explorer

STEP 4: Undo the damage done by the virus

STEP 1: Track down Reaction Setup in the computer memory

  • Open your Task Manager by pressing CTRL+SHIFT+ESC keys simultaneously
  • Carefully review all processes and stop the suspicious ones.


  • Write down the file location for later reference.

Step 2: Locate Reaction Setup startup location

Reveal Hidden Files

  • Open any folder
  • Click on “Organize” button
  • Choose “Folder and Search Options”
  • Select the “View” tab
  • Select “Show hidden files and folders” option
  • Uncheck “Hide protected operating system files”
  • Click “Apply” and “OK” button

Clean Reaction Setup virus from the windows registry

  • Once the operating system loads press simultaneously the Windows Logo Button and the R key.


  • A dialog box should open. Type “Regedit”


Depending on your OS (x86 or x64) navigate to:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run] or
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] or

  • and delete the display Name: [RANDOM]

delete backgroundcontainer

  • Then open your explorer and navigate to: %appdata% folder and delete the malicious executable.

Clean your HOSTS file to avoid unwanted browser redirection

Navigate to %windir%/system32/Drivers/etc/host

If you are hacked, there will be foreign IPs addresses connected to you at the bottom. Take a look below:


STEP 3 : Clean Reaction Setup traces from Chrome, Firefox and Internet Explorer

  • Open Google Chrome

  • In the Main Menu, select Tools then Extensions
  • Remove the Reaction Setup by clicking on the little recycle bin
  • Reset Google Chrome by Deleting the current user to make sure nothing is left behind

disable Reaction Setup from chrome

  • Open Mozilla Firefox

  • Press simultaneously Ctrl+Shift+A
  • Disable the unwanted Extension
  • Go to Help
  • Then Troubleshoot information
  • Click on Reset Firefox

remove Reaction Setup from firefox

  • Open Internet Explorer

  • On the Upper Right Corner Click on the Gear Icon
  • Click on Internet options
  • go to Toolbars and Extensions and disable the unknown extensions
  • Select the Advanced tab and click on Reset

remove Reaction Setup from ie

  • Restart Internet Explorer

Step 4: Undo the damage done by Reaction Setup

This particular Virus may alter your DNS settings.

Attention! this can break your internet connection. Before you change your DNS settings to use Google Public DNS for Reaction Setup, be sure to write down the current server addresses on a piece of paper.

To fix the damage done by the virus you need to do the following.

  • Click the Windows Start button to open the Start Menu, type control panel in the search box and select Control Panel in the results displayed above.
  • go to Network and Internet
  • then Network and Sharing Center
  • then Change Adapter Settings
  • Right-click on your active internet connection and click properties. Under the Networking tab, find Internet Protocol Version 4 (TCP/IPv4). Left click on it and then click on properties. Both options should be automatic! By default it should be set to “Obtain an IP address automatically” and the second one to “Obtain DNS server address automatically!” If they are not just change them, however if you are part of a domain network you should contact your Domain Administrator to set these settings, otherwise the internet connection will break!!!

You must clean all your browser shortcuts as well. To do that you need to

  • Right click on the shortcut of your favorite browser and then select properties.


  • in the target field remove Reaction Setup argument and then apply the changes.
  • Repeat that with the shortcuts of your other browsers.
  • Check your scheduled tasks to make sure the virus will not download itself again.

How to Permanently Remove Reaction Setup Virus (automatic) Removal Guide

Please, have in mind that once you are infected with a single virus, it compromises your system and let all doors wide open for many other infections. To make sure manual removal is successful, we recommend to use a free scanner of any professional antimalware program to identify possible registry leftovers or temporary files.

Leave a Comment