Browser Redirect

“This extension is managed and cannot be removed” Removal (July 2017 Update)

Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading SpyHunter to scan for malicious programs installed with it. This may save you hours and cut down your time to about 15 minutes. 

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More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

This page aims to help you remove “This extension is managed and cannot be removed” Virus. Our removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

“This extension is managed and cannot be removed” Virus is a kind of a program that “hijacks” your browsers (applies to all common ones: Firefox, Opera, Chrome or Explorer) and then alters their settings, thus making them substitute your usual browser home page with some entirely unfamiliar ones; causing your browser app to redirect you to somewhere on the Internet as soon as you try visiting a website; and lastly – allowing a huge number of pop-up, box, banner and tab ads invade your browser every time you use it.

What is “This extension is managed and cannot be removed” Virus  really?

It is a logical conclusion that all the typical features we have mentioned in the previous paragraph define “This extension is managed and cannot be removed” Virus as a browser hijacker.

All hijackers actually have the same characteristics as the ones explained above. Generally, these programs are considered harmless. Nonetheless, it is still crucial that we point out all of their likely effects, not only the ones that do not result in any actual damage.

Indeed, “This extension is managed and cannot be removed” Virus may often be mistaken for a representative of malware as people are not really aware of the scope of its activities and some of its effects may really be seen as slightly intrusive. We are going to back up this statement below:
“This extension is managed and cannot be removed” Virus’s ability to produce lots of ads and flood all your browser windows and tabs with them might be extremely irritating, but it is still  totally legal. The great number of the pop-ups and banners are generated because the more of them appear on your screen, the more money the developers of “This extension is managed and cannot be removed” Virus get paid. This is simple online marketing- one really legitimate and prolific strategy.  Oftentimes the ads this hijacker broadcasts may be in accordance with the latest of your online searches. This might confuse some users and they could believe that a program like “This extension is managed and cannot be removed” Virus is able to spy on them.  Luckily, this is NOT true, as hijackers may often review your browsing activities and try to discover what type of services and products you might need.  Consequently, the entire flow of the produced pop-ups and other ads may be promoting the same things you have recently been seeking. 

“This extension is managed and cannot be removed” Virus Removal

If you are a Windows user, continue with the guide below.

If you are a Mac user, please use our How to remove Ads on Mac guide.

If you are an Android user, please use our Android Malware Removal guide.


Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).



We get asked this a lot, so we are putting it here: Removing parasite manually may take hours and damage your system in the process. We recommend downloading SpyHunter to see if it can detect parasite files for you.

Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab (the “Details” Tab on Win 8 and 10). Try to determine which processes are dangerous. 


Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at:

Scan Results

Virus Scanner Result

After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 


Hold together the Start Key and R. Type appwiz.cpl –> OK.


You are now in the Control Panel. Look for suspicious entries. Uninstall it/them.

Type msconfig in the search field and hit enter. A window will pop-up:


Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.


Hold the Start Key and R –  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

hosts_opt (1)

If there are suspicious IPs below “Localhost” – write to us in the comments.

Open the start menu and search for Network Connections (On Windows 10 you just write it after clicking the Windows button), press enter.

  1. Right-click on the Network Adapter you are using —> Properties —> Internet Protocol Version 4 (ICP/IP), click  Properties.
  2. The DNS line should be set to Obtain DNS server automaticallyIf it is not, set it yourself.
  3. Click on Advanced —> the DNS tab. Remove everything here (if there is something) —> OK.



  • After you complete this step, the threat will be gone from your browsers. Finish the next step as well or it may reappear on a system reboot.

Right click on the browser’s shortcut —> Properties.

NOTE: We are showing Google Chrome, but you can do this for Firefox and IE (or Edge).


Properties —–> Shortcut. In Targetremove everything after .exe.

ie9-10_512x512  Remove “This extension is managed and cannot be removed” Virus from Internet Explorer:

Open IE, click  IE GEAR —–> Manage Add-ons.

pic 3

Find the threat —> Disable. Go to IE GEAR —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

firefox-512 Remove “This extension is managed and cannot be removed” Virus from Firefox:

Open Firefoxclick  mozilla menu  ——-> Add-ons —-> Extensions.

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove “This extension is managed and cannot be removed” Virus from Chrome:

Close Chrome. Navigate to:

 C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. There is a Folder called “Default” inside:

Rename the Folder to Backup Default

Rename it to Backup Default. Restart Chrome.


To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

If you want to avoid the risk, we recommend downloading SpyHunter
a professional malware removal tool.

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

Type Regedit in the windows search field and press Enter.

Inside, press CTRL and F together and type the threat’s Name. Right click and delete any entries you find with a similar name. If they don’t show up this way, go manually to these directories and delete/uninstall them:

  • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
    HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!

There is nothing really dangerous about all that. No damage could come from the modifications of your usual homepage, the one that you now have is the one that has paid to get popularized.  Also, the redirections could look dangerous to some users due to the rumors that they may take you to sites with some malicious content like Ransomware or Trojans. This statement  has not been proven and you don’t have to worry about the consequences. Generally, “This extension is managed and cannot be removed” Virus has nothing to do with any version of malicious software because it doesn’t possess their characteristics such as blocking or deleting data, taking over files, demanding money, turning your device into a bot, etc. . Such hijackers may only be irritating because of the annoying nature of the advertisements they could display.

How and where has your system got infected by “This extension is managed and cannot be removed” Virus?

Nothing can be said for certain about these infections since  most browser hijackers could hide everywhere on the web. Your PC could catch them if you visit a shady website, if you download a torrent from a suspicious page, if you open an email. Of course, there are some usual sources which distribute most of the hijackers out there – the infamous software bundles. They are what developers create to spread “This extension is managed and cannot be removed” Virus more easily and make money out of all the annoying ads.

However, no device ever has got infected by this hijacker because its owner has  simply downloaded a  bundle.  It is more likely that the infected user has installed this bundle via using an improper method. Supposedly,  that’s how computers  get under the attack of the pop-ups and redirections. The incorrect way might have many names, it might appear as the DEFAULT / RECOMMENDED or EASY installation feature of the wizard installer that gets loaded every time you try to install a program on your PC.

Please, do not select any of the aforementioned features. Instead, you need to go with the other ones, which could be named CUSTOMIZED or ADVANCED in the wizard’s menu. By doing that you will see what the exact bundle really includes and you will choose only the programs you are interested in, and avoid  the ad-producing products.

What if the contamination has already occurred?

We really recommend that you should implement all the steps from our Removal Guide below and see whether they will be useful enough to uninstall “This extension is managed and cannot be removed” Virus.


Name “This extension is managed and cannot be removed” 
Type  Adware/Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Irritating ads, redirection, and the appearance of new homepages.
Distribution Method Bundles, torrents, websites.
Detection Tool

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you’ll need to purchase the full version. More information about SpyHunter and steps to uninstall.

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