How to remove DevTool "virus"

This page has some information about DevTool CSP IFrame ads and it's removal.


Many Google Chrome users had faced the problem with scarry pop-ups from Devtool.

My Google Chrome was hijacked by DevTool: Remove CSP, IFrame option, I can't delete it, he is a virus plugin.

You can read the full threat here: But there is no good answer in the topic/ Do, we try to make a complex guide.

If you need to get rid of this adware and other similar tools, you'd better understand how they work and why they were created. Their precise goal is to generate ads, and by displaying them to you and forcing you to click through them, adware generates activity on the sites it tries to "boost". The majority of banners DevTool generates don’t have anything behind them and are developed to make a customer visit the site, but some of them offer goods. It’s a compliment to say goods, by the way, since these are more likely to be called “bads” if you know what we mean. The thing about DevTool’s links is that they aren't true. If a webpage gets advertised via an advertising program, this literally states that it can't use any lawful service. It gently pushes us towards a conclusion that the site is either of second class or unlawful sort. And how would anyone force people to purchase a thing like that? Of course, via an aggressive advertisement, i.e., making dozens of links emerge on victims’ monitors until they follow at least one of them.

DevTool, literally, is a harmful program, developed to lure some funds out of you. Well, it’s not literally about the money, it’s more like you unintentionally doing some work for Internet-scammers, following the links they display to you, and attending unwanted sites.


How to remove DevTool from your PC

Method 1. Use special removal software

Method 2. Remove DevTool manually

Step 1. Uninstall the unfamiliar programs from Control Panel

Step 2. Check hosts file

Step 3. Remove DevTool from the browser (Google Chrome/Mozilla Firefox/IE/Opera/Safari/Edge)


If you are MAC user, follow this guide How to remove virus from MAC


Now it’s time to eliminate this adware forever. We have told you everything you should realize about it, and if you abide by our advice, DevTool won’t ever be able to corrupt the system. We have a single hint we want to give: install a solid AV utility. If you've had one working during the penetration – it’s pretty much obvious that it isn’t working, since adware is within the system currently. There’s one more thing regarding antiviruses you have to realize: don’t ever disable them. Sometimes you receive those swindle notification on the screen, suggesting to disable your AV program as it interferes from installing. It’s only adware struggling to penetrate the workstation. You should keep the antivirus always on guard and updated.

Talking about AV utilities – we have a special one for you! The tool is called Spyhunter, and it provides its services for more than twelve years now. Thousands of people in many countries of the world are enjoying Spyhunter’s services right now, because of its multiple advantages. Antimalware is lightweight, efficient and fast, has a 24/7 technical support to take care of any issues, requires less CPU power than the majority of other AV programs and has a frequently-updated database. If you want to try Spyhunter and get the machine fully protected – press the button under this paragraph. If you’d rather refrain from buying any programs and try to get rid of DevTool by hand – check out our detailed instruction below.

Instructions for manual deletion

Uninstall software from the system

Windows 7

1. Uninstall the unfamiliar programs from Control Panel

  • Start
  • Control Panel
  • Programs
  • Programs and Features
  • Uninstall a program
  • Select a program and press Uninstall

2. Check the following folders for the suspicious elements

  • C:\Program Files\
  • C:\ProgramData\
  • C:\Users\YOUR_USER\AppData\Roaming\
  • C:\Users\YOUR_USER\AppData\Local\

3. Clean registry:

  • Click Start
  • Type Regedit.exe
  • Search for "DevTool" and delete these elements


bwd  Instructions 1/2  fwd

Windows 10

1. On the field Search Windows type 'Control Panel'

2. Click Uninstall a program

3. Select the program and press Uninstall


Windows 8

1. Point to the upper-right corner of the screen, move the mouse pointer down, and tap Search.

2. Enter control panel in the search box, and then click Control Panel.

3. Under View by:, select Large Icons, and then click Programs and features.

4. Click the program, and then click Uninstall.

5. Follow the instructions on the screen.

6. Delete unfamiliar programs from Control Panel

  • Start
  • Control Panel
  • Programs
  • Programs and Features
  • Uninstall a program
  • Select a program and press Uninstall

7. Remove elements like on Win7.


Check hosts file

Modify hosts file, that located in C:\Windows\System32\drivers\etc\ .

Hosts file.Step 1

Open the file with Notepad and delete suspicious strings.

Hosts file.Step 2

It has to look like this:

Hosts file.Step 3

Check default Network settings

  • Click Start
  • Click Control Panel
  • Click Network and Internet
  • Click Network and Sharing Center
  • Select Change Adapter Settings
  • Right-click your active internet connection and select Properties Scroll down: you will find Internet Protocol Version 4 (TCP/IPv4) > Select Properties > Select Automatic options: "Obtain an IP address automatically" and "Obtain DNS server address automatically"

Update Group Policy

Step 1. Start

Step 2. Cmd.exe

Step 3. Put there next commands:

  • rd /S /Q "GroupPolicyUsers"
  • rd /S /Q "GroupPolicy"
  • gpupdate /force

Remove DevTool from the browser

Internet Explorer

Step 1. Disable strange extensions:

  • Tools
  • Manage add-ons
  • Remove DevTool

Step 2.Change homepage:

  • Tools
  • Internet Options
  • General
  • Home page
  • Put “about:blank”

Step 3. Change new tab page:

  • Tools
  • Internet Options
  • General
  • Tabs


Google Chrome

Step 1. Remove unfamiliar add-on:

  • Customize and Control Google Chrome
  • More Tools
  • Extensions
  • Remove add-on

Step 2. Change homepage:

  • Customize and Control Google Chrome
  • Settings
  • Open a specific page or set of pages
  • Delete all specific pages


Mozilla Firefox

Step 1. Delete suspicious extensions:

  • Open menu
  • Add-ons
  • Extensions
  • Remove add-on

Step 2. Change homepage:

  • Open menu
  • Options
  • Home
  • Choose “Blank page” into Homepage and new windows


Opera browser

Step 1. Disable strange add-ons:

  • Open Opera;
  • Customize and Control Opera;
  • Extensions;
  • Choose add-on and press button "Disable"

Step 2. Change homepage:

  • Open Opera browser;
  • Customize and Control Opera;
  • Settings;
  • On Startup;
  • Open a specific page or set of pages;
  • Press button "Add a new page" and change Homepage to your favorite one.



Step 1. Start Safari browser

Step 2. Display a menu of General Safari Settings

Step 3. Reset Safari...

Step 4. Press "Reset"


Microsoft Edge

Step 1. Delete the suspicious extensions.

  • Menu
  • Extensions
  • Choose unfamiliar extension
  • Press Uninstall

Step 2. Change homepage.

  • Go to the website of the search engine you want
  • Select More actions
  • Settings
  • View advanced settings
  • Change search engine
  • Select search engine you want and Set as default


Video how to reset browser and remove all extensions


How malware infects the system

The infection manner is the thing you should understand, to protect the laptop against adware. In most cases, there is at least a single unwanted program on your workstation, and it assists the others to break through. Our aim now is to explain how the perilous utilities penetrate the fresh, shielded computer. Usually, it is possible with the customer’s assistance. Here are three of the very popular methods to scam you into installing DevTool:

  • Straightforward download. Some customers download dangerous tools supposing that they're good, and the most effective way to avoid it is to realize how to distinguish an unwanted tool from a good one. Frequently, they try to look like helpful programs and choose the ones whose activities can't be completely explained. To this type belong various search programs promising to boost your browser or help you in finding anything from the best sales to tasty deals. Some hackers prefer system optimizers and programs for Facebook, Instagram, Pinterest and Twitter. If you're going to download one of these – we advise you to look for tons of comments about it on good sites before you download it.
  • "Bundling". It’s the manner when DevTool or any other is mixed up with a bunch of other utilities. Each of them is either useless or viral except one. In most cases, the good one is on the title so that the customer assumed that he'll get it, while all he gets is a bunch of viruses. We know the moment, during installation, when it's possible to refuse the pre-selected installation manner and reject the installation of perilous tools. This is not the one where you may skip every menu and forget about it. Just look at the information in the dialogue windows during the installation, and avoid suspicious files.
  • Email scams. This way is utilized less often than the bundling, still you cannot be overcautious with swindlers. The thing is that sometimes you get weird messages from unknown addresses. Sometimes it’s just a mis-sent message, but if such a letter has anything attached to it – do not open it. Following such a link or opening a document might lead to the immediate setup of god-knows-what onto your computer, and it might be way worse than adware.

We hope that our tips help you understand the ways of DevTool penetration, and reduce the chances of infection.

This website uses cookies to improve your experience. If you continue using the site, we will assume that you accept our cookies policy.