How to uninstall “Extension installed by enterprise policy” (April 2019 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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This page aims to help you remove “Extension installed by enterprise policy”. Our removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

If all of your browsers (even the most common ones – Chrome/ Explorer/ Firefox) have recently been under the “attack” of various online ads:  pop-ups, banners and new tabs that may seem out of control, then your problem is called “Extension installed by enterprise policy” – an ad-displaying program, a member of the Adware software  category.

What to expect when your PC has been contaminated by programs like “Extension installed by enterprise policy”?

As it has been pointed out earlier, “Extension installed by enterprise policy” is an Adware-type program. Following the logic coming from this fact, we can assume that you should expect lots of online ads (without your official and concrete consent given) to be generated, which might slightly annoy you and interrupt your entire online experience. The number of those pop-ups and banners could be so big that your device might become significantly slower, which may annoy you even more. It is also possible, though unlikely, that some of the broadcast pop-ups, banners and tabs could result in some redirections to perhaps suspicious pages with quite a shady content. Briefly speaking, these are the probable irritations you may experience because of an infection caused by “Extension installed by enterprise policy”.

Why does this Adware produce so many ads?

Actually, the reason is quite logical: Adware is a term that embraces all ad-generating programs ever developed, which have the single purpose to advertise products, software, various companies and services. This kind of software is the cyber equivalent of the irritating ads broadcast in the middle of a very interesting film on TV, for example. Another essential reason for creating such ad-broadcasting software is the fact that every developer, just as any other living person, has to make some money to maintain their activities and lifestyle. Given also the fact that there are a lot of vendors and producers that are interested in promoting whatever they sell online, it is understandable what motivates programmers to create such software. Simple as that – the creators of those ad-producing programs are paid according to the number of the displayed and sometimes clicked-on advertisements.

Distribution of Adware:

If you are wondering about the possible ways “Extension installed by enterprise policy” could spread, the most common method is by mixing such programs with other software versions, and thus creating ‘bundles’ that are later on distributed for free. Also, “Extension installed by enterprise policy” may infect your PC via torrents, infected websites, spam letters inside your email (and their attachments). However, software bundles remain the basic source of this cyber annoyance.

Is there a reason to assume that programs based on Adware are malicious?

To our delight, there is no reason for the classification of “Extension installed by enterprise policy” or any other version of Adware as malware. All virus programs belong to the group of malicious software because to their evil activities. When it comes to “Extension installed by enterprise policy”, no really terrifying actions could come from it – such a program doesn’t cause any file encryption, it can’t help any virus sneak into your computer secretly. Adware doesn’t explore weaknesses and spy on your account credentials, activities and everyday life through your PC. Such ad-generating programs can only get on your nerves until you get them removed from your device.

Still, you may not remember installing such a program because:

Perhaps because “Extension installed by enterprise policy” has made its way onto your computer from a bundle and you have made the usual mistake of installing the entire content of this bundle without reviewing it. This could take place when you proceed with the wrong installation feature at the time of installing a given piece of software. These undesired options are often called brief / quick / automatic / default. They are known to incorporate the entire bundle into your system. If you need to try/ use a particular product from an exact software combo, however, you prefer to skip the part with the disturbing ads, you have to go with an installation feature that allows you to opt out of the unwanted programs. Normally, such an option is the customized one. Logically, by using it you will be able to customize the installation process as you wish. Indeed, this option may even spare you many bigger issues related to serious threats such as Trojan and Ransomware-caused contaminations.

Some prevention secrets:

Prevention is not a very complicated process.However, it needs to be a constantly ongoing one. The first step is to always proceed with an installation in the manner we have discussed above. Another important step is to provide your PC with an advanced anti-malware tool and you will get warned in case of any security/safety breaches. And, finally, in case of an ongoing contamination, use the Removal Guide at the end of this page.



Name “Extension installed by enterprise policy”
Type  Adware/Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Some annoying distribution of all kinds of ads. Probable slowdown of the entire machine
Distribution Method The basic means is any existing bundle. Also, various spam; torrents and shareware.
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.

“Extension installed by enterprise policy” 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 automatically. If 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 Target, remove everything after .exe.

ie9-10_512x512  Remove “Extension installed by enterprise policy” 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 “Extension installed by enterprise policy” from Firefox:

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

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove “Extension installed by enterprise policy” 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!

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