If your web-browser gets rerouted to unwanted web site called Coostero.com or a large count of ads are displayed where they should not be then it’s a sign that the adware (sometimes named ‘ad-supported’ software) get installed on your personal computer.
Adware is designed for the purpose of showing a huge count of ads without the user’s consent or permission. If you want to remove Coostero.com redirect, you will not succeed, because the adware is very stubborn. Using the following guidance, you surely can remove Coostero.com advertisements completely from your web browsers.
The adware responsible for Coostero.com redirect, is not a virus, but the virus behaves similarly. It changes web-browser settings and blocks them from changing. Also the adware can install additional web-browser extensions and modules that will inject sponsored links within the Edge, Firefox, Internet Explorer and Google Chrome’s screen. Moreover, the adware may install a browser addon that once started, will alter the browser’s homepage and search engine.
Even worse, the ad-supported software be able to gather personal data about you such as what sites you are opening, what you are looking for the Web and so on. This privacy information, later, may be sold to third party companies.
Thus, the adware is quite dangerous. So, we suggest you remove it from your system as quickly as possible. Follow the steps presented below to delete Coostero.com popups from the Google Chrome, Microsoft Edge, IE and Mozilla Firefox.
How to remove Coostero.com redirect
There are a simple manual guidance below that will assist you to remove Coostero.com redirect from your MS Windows computer. The most effective solution to get rid of this ad supported software is to perform the manual removal guidance and then use Zemana Free, MalwareBytes Anti-Malware (MBAM) or HitmanPro automatic tools (all are free). The manual method will assist to weaken this adware and these malicious software removal utilities will completely delete Coostero.com popup advertisements and return the Internet Explorer, Chrome, Firefox and Microsoft Edge settings to default.
To remove Coostero.com, complete the steps below:
- How to manually get rid of Coostero.com
- Coostero.com popup ads automatic removal
- Run AdBlocker to block Coostero.com and stay safe online
- Where the adware comes from
- To sum up
How to manually get rid of Coostero.com
Most common adware may be removed without any antivirus apps. The manual ad-supported software removal is step-by-step instructions that will teach you how to remove the Coostero.com redirect.
Uninstall PUPs through the Windows Control Panel
The best way to start the computer cleanup is to delete unknown and dubious apps. Using the Microsoft Windows Control Panel you can do this quickly and easily. This step, in spite of its simplicity, should not be ignored, because the removing of unneeded software can clean up the Internet Explorer, Firefox, Google Chrome and Microsoft Edge from popups, hijackers and so on.
Windows 10, 8.1, 8
Click the Microsoft Windows logo, and then press Search 
. Type ‘Control panel’and press Enter as shown on the screen below.
When the ‘Control Panel’ opens, click the ‘Uninstall a program’ link under Programs category as on the image below.
Windows 7, Vista, XP
Open Start menu and choose the ‘Control Panel’ at right as on the image below.
Then go to ‘Add/Remove Programs’ or ‘Uninstall a program’ (Windows 7 or Vista) as shown on the image below.
Carefully browse through the list of installed software and remove all suspicious and unknown software. We suggest to press ‘Installed programs’ and even sorts all installed applications by date. Once you’ve found anything suspicious that may be the adware responsible for redirections to Coostero.com or other potentially unwanted application (PUA), then select this application and click ‘Uninstall’ in the upper part of the window. If the suspicious program blocked from removal, then run Revo Uninstaller Freeware to completely remove it from your system.
Remove Coostero.com from Mozilla Firefox by resetting web browser settings
If the Firefox settings such as start page, newtab page and default search provider have been modified by the adware, then resetting it to the default state can help. However, your themes, bookmarks, history, passwords, and web form auto-fill information will not be deleted.
First, launch the Mozilla Firefox and click 
button. It will show the drop-down menu on the right-part of the internet browser. Further, press the Help button (
) like below.
In the Help menu, select the “Troubleshooting Information” option. Another way to open the “Troubleshooting Information” screen – type “about:support” in the web browser adress bar and press Enter. It will show the “Troubleshooting Information” page as displayed on the image below. In the upper-right corner of this screen, press the “Refresh Firefox” button.
It will display the confirmation prompt. Further, press the “Refresh Firefox” button. The Firefox will start a task to fix your problems that caused by the ad-supported software responsible for redirecting your internet browser to Coostero.com page. After, it’s complete, click the “Finish” button.
Remove Coostero.com redirect from Google Chrome
Like other modern browsers, the Google Chrome has the ability to reset the settings to their default values and thereby restore the web browser’s settings such as newtab page, home page and search provider that have been changed by the adware that causes a lot of unwanted Coostero.com ads.
- First, launch the Chrome and click the Menu icon (icon in the form of three dots).
- It will open the Google Chrome main menu. Select More Tools, then click Extensions.
- You will see the list of installed add-ons. If the list has the extension labeled with “Installed by enterprise policy” or “Installed by your administrator”, then complete the following guide: Remove Chrome extensions installed by enterprise policy.
- Now open the Chrome menu once again, click the “Settings” menu.
- Next, click “Advanced” link, which located at the bottom of the Settings page.
- On the bottom of the “Advanced settings” page, click the “Reset settings to their original defaults” button.
- The Google Chrome will open the reset settings prompt as shown on the image above.
- Confirm the web-browser’s reset by clicking on the “Reset” button.
- To learn more, read the post How to reset Chrome settings to default.
Delete Coostero.com pop-up ads from Microsoft Internet Explorer
By resetting IE web-browser you revert back your web browser settings to its default state. This is good initial when troubleshooting problems that might have been caused by ad supported software that redirects your browser to undesired Coostero.com site.
First, launch the Internet Explorer, click 
) button. Next, click “Internet Options” as shown in the following example.
In the “Internet Options” screen select the Advanced tab. Next, press Reset button. The Microsoft Internet Explorer will display the Reset Internet Explorer settings prompt. Select the “Delete personal settings” check box and press Reset button.
You will now need to reboot your system for the changes to take effect. It will remove adware related to Coostero.com pop up advertisements, disable malicious and ad-supported browser’s extensions and restore the IE’s settings like newtab page, search engine by default and start page to default state.
Coostero.com popup ads automatic removal
After completing the manual removal steps above all unwanted apps, malicious internet browser’s extensions and ad-supported software that causes multiple annoying ads should be removed. If the problem with Coostero.com advertisements is still remained, then we advise to scan your PC for any remaining malicious components. Run recommended free adware removal software below.
Delete Coostero.com pop-up advertisements with Zemana AntiMalware (ZAM)
Zemana Anti-Malware is a tool that can delete adware, potentially unwanted apps, hijackers and other malware from your computer easily and for free. Zemana is compatible with most antivirus software. It works under Windows (10 – XP, 32 and 64 bit) and uses minimum of system resources.
Download Zemana by clicking on the following link. Save it directly to your Microsoft Windows Desktop.
164986 downloads
Author: Zemana Ltd
Category: Security tools
Update: July 16, 2019
After the download is finished, start it and follow the prompts. Once installed, the Zemana will try to update itself and when this procedure is complete, click the “Scan” button to perform a system scan for the adware related to Coostero.com pop-up advertisements.
A scan can take anywhere from 10 to 30 minutes, depending on the count of files on your machine and the speed of your computer. When a threat is detected, the number of the security threats will change accordingly. Once you’ve selected what you wish to remove from your computer click “Next” button.
The Zemana Anti-Malware (ZAM) will get rid of ad-supported software related to Coostero.com ads and add threats to the Quarantine.
Run Hitman Pro to get rid of Coostero.com pop up advertisements
Hitman Pro is a completely free (30 day trial) utility. You don’t need expensive methods to delete adware which cause annoying Coostero.com pop up ads to appear and other malicious applications. HitmanPro will uninstall all the unwanted software like adware and browser hijackers for free.
Installing the Hitman Pro is simple. First you’ll need to download HitmanPro on your MS Windows Desktop from the link below.
Once downloading is finished, open the folder in which you saved it. You will see an icon like below.
Double click the HitmanPro desktop icon. Once the utility is started, you will see a screen as displayed below.
Further, click “Next” button to begin scanning your PC for the adware responsible for Coostero.com redirect. This procedure may take quite a while, so please be patient. Once the scan get finished, HitmanPro will show a list of all items found by the scan as shown on the image below.
When you’re ready, press “Next” button. It will open a dialog box, click the “Activate free license” button.
Scan and free your computer of adware with Malwarebytes
You can delete Coostero.com redirect automatically with a help of Malwarebytes Free. We advise this free malicious software removal tool because it can easily get rid of hijackers, adware, PUPs and toolbars with all their components such as files, folders and registry entries.
- Please go to the following link to download MalwareBytes Free. Save it on your Microsoft Windows desktop.
Malwarebytes Anti-malware
327224 downloads
Author: Malwarebytes
Category: Security tools
Update: April 15, 2020
- After the downloading process is finished, close all apps and windows on your system. Open a file location. Double-click on the icon that’s named mb3-setup.
- Further, press Next button and follow the prompts.
- Once install is finished, click the “Scan Now” button to perform a system scan for the ad supported software that causes intrusive Coostero.com pop up ads. A system scan can take anywhere from 5 to 30 minutes, depending on your PC system. While the MalwareBytes Free is checking, you can see how many objects it has identified either as being malware.
- When the scan is complete, a list of all threats found is produced. Next, you need to press “Quarantine Selected”. After finished, you can be prompted to restart your system.
The following video offers a few simple steps on how to get rid of browser hijackers, ad-supported software and other malicious software with MalwareBytes AntiMalware (MBAM).
Run AdBlocker to block Coostero.com and stay safe online
Use ad-blocker application such as AdGuard in order to block ads, malvertisements, pop-ups and online trackers, avoid having to install harmful and adware browser plug-ins and add-ons that affect your machine performance and impact your personal computer security. Browse the Internet anonymously and stay safe online!
Installing the AdGuard is simple. First you will need to download AdGuard from the following link. Save it to your Desktop.
26883 downloads
Version: 6.4
Author: © Adguard
Category: Security tools
Update: November 15, 2018
After the download is finished, launch the downloaded file. You will see the “Setup Wizard” screen as displayed in the figure below.
Follow the prompts. When the install is complete, you will see a window as on the image below.
You can press “Skip” to close the install application and use the default settings, or click “Get Started” button to see an quick tutorial that will help you get to know AdGuard better.
In most cases, the default settings are enough and you don’t need to change anything. Each time, when you launch your machine, AdGuard will run automatically and stop pop up ads, pages like Coostero.com, as well as other harmful or misleading websites. For an overview of all the features of the program, or to change its settings you can simply double-click on the AdGuard icon, that can be found on your desktop.
Where the adware comes from
The adware related to Coostero.com redirect can be categorized as PUP (potentially unwanted program) which mostly comes on the system with other freeware. Most often, this unwanted program comes without the user’s knowledge. Therefore, many users aren’t even aware that their system has been hijacked by malware. Please follow the easy rules in order to protect your personal computer from any unwanted programs: do not install any suspicious software, read the user agreement and select only the Custom, Manual or Advanced setup type, don’t rush to click the Next button. Also, always try to find a review of the program on the Net. Be careful and attentive! If Coostero.com popup advertisements has already come into your system, then you need to check your system for ad-supported software and other malicious software. Use our detailed steps that are listed above.
To sum up
After completing the instructions shown above, your machine should be free from ad-supported software that causes multiple annoying popups and other malware. The Google Chrome, Microsoft Internet Explorer, Edge and Mozilla Firefox will no longer reroute you to various intrusive websites similar to Coostero.com. Unfortunately, if the guide does not help you, then you have caught a new ad supported software, and then the best way – ask for help here.
