The cause of unwanted prestoris.com pop-up ads on your screen is ‘ad-supported’ software (also known as adware). Technically, the adware, that opens a huge number of popup ads or redirects on an annoying web-page, is not a virus. It is is created to make a money. Once started, the ad-supported software injects a small code within the content of web sites that you visit. The malicous code may pop-up a new web-browser window with prestoris.com web page or insert a large amount of ads directly into the sites you’re viewing.
http://prestoris.com/afu.php?zoneid= …
The malicious software from the ad supported software family that changes the settings of browsers usually affects only the FF, Google Chrome, IE and Microsoft Edge. However, possible situations, when any other internet browsers will be affected too. The adware may change the Target property of a internet browser’s shortcut, so every time you run the web browser, instead of your start page, you will see the annoying prestoris.com advertisements.
While your machine is infected with the adware, the Chrome, Internet Explorer, Firefox and Edge may be redirected to prestoris.com unwanted page. Of course, the adware may not cause damages to your files or Windows system, but it may display a lot of annoying advertisements. These ads will be injected within the content of web pages that are you opening in your browser and can be varied: pop-up ads, in-text ads, different sized banners, offers to install an questionable software. The advertisements will appear on all web sites, including sites where previously you have never seen any advertising banners. In this case, when you open any web page, you may see in your web-browser’s status bar the following messages: ‘Waiting for prestoris.com’, ‘Transferring data from prestoris.com’, ‘Looking up prestoris.com’, ‘Read prestoris.com’, ‘Connected to prestoris.com’.
Therefore it’s very important to follow the guide below as soon as possible. The instructions will assist you to remove ad-supported software as well as clean your machine from the prestoris.com pop-ups. What is more, the step-by-step instructions below will help you delete other malicious software like unwanted toolbars and browser hijackers, which could penetrate the computer along with the adware.
How did prestoris.com pop-up ads get on your PC
Probably, the adware get installed onto your computer when you have installed a freeware like E-Mail checker, PDF creator, video codec, etc. Because, most commonly the adware is bundled within the setup packages from Softonic, Cnet, Soft32, Brothersoft or other similar web-sites. Even removing the application that contains ‘ad supported’ software, does not help you delete the prestoris.com ads. Therefore, you must follow the guide below to remove all annoying advertisements.
How to manually remove prestoris.com redirect
The following instructions is a step-by-step guide, that will help you manually remove prestoris.com advertisements from the Chrome, Firefox, Microsoft Edge and IE.
- Remove suspicious and unknown applications by using Windows Control Panel
- Remove prestoris.com pop-ups from Google Chrome
- Get rid of prestoris.com pop-up ads from Firefox
- Remove prestoris.com pop-up ads from Internet Explorer
- Disinfect the browser’s shortcuts to remove prestoris.com redirect
- Delete unwanted Scheduled Tasks
Remove suspicious and unknown applications by using Windows Control Panel
First, you should try to identify and uninstall the application that causes the appearance of unwanted advertisements and browser redirect to unwanted sites, using the ‘Uninstall a program’ which is located in the ‘Control panel’.
Windows 8, 8.1, 10
Press Windows key
, then click Search 
. Type ‘Control panel’and press Enter as shown on the image below.
When the ‘Control Panel’ opens, click the ‘Uninstall a program’ under Programs category as shown in the figure below.
You will see the ‘Uninstall a program’ panel as shown below.
Very carefully look around the entire list of installed software. Most likely, one or more of them are responsible for the internet browser redirect to unwanted prestoris.com advertisements. If you have many programs installed, you can help simplify the search of malicious programs by sort the list by date of installation. Once you have found a suspicious, unwanted or unused application, right click to it and press ‘Uninstall’.
Windows XP, Vista, 7
First, click ‘Start’ button and select ‘Control Panel’ at right panel as shown below.
When the Windows ‘Control Panel’ opens, you need to click ‘Uninstall a program’ under ‘Programs’ as shown in the figure below.
You will see a list of applications installed on your PC. We recommend to sort the list by date of installation to quickly find the applications that were installed last. Most likely they responsibility for the appearance of annoying ads and browser redirect. If you are in doubt, you can always check the application by doing a search for her name in Google, Yahoo or Bing. When the program, you need to uninstall, is found, simply click on its name, and then click ‘Uninstall’ as shown on the screen below.
Remove prestoris.com pop-ups from Google Chrome
Reset Google Chrome settings is a easy way to remove the malware and adware, as well as to restore the browser’s settings that have been changed by adware.
- Now launch the Google Chrome and click Menu button (small button in the form of three horizontal stripes).
- It will show the Google Chrome main menu. Select “Settings” option.
- You will see the Google Chrome’s settings page. Scroll down and click “Show advanced settings” link.
- Scroll down again and press the “Reset settings” button.
- The Google Chrome will show the reset profile settings page as shown on the image above.
- Next, click the “Reset” button.
- Once this procedure is done, your web browser’s settings will be restored to their original defaults. This will reset your home page, newtab page and search provider by default.
- To learn more, read the article How to reset Chrome settings to default.
Get rid of prestoris.com pop-up ads from Firefox
First, launch the Firefox. Next, click the button in the form of three horizontal stripes (
). It will show the drop-down menu. Next, click the “Help” button (
).
In the Help menu, click the “Troubleshooting Information”. In the upper-right corner of the “Troubleshooting Information” page, click “Refresh Firefox” button.
Confirm your action, press the “Refresh Firefox”.
Remove prestoris.com pop-up ads from Internet Explorer
First, start the Microsoft Internet Explorer, then press 
button. Next, click “Internet Options” as shown on the image below.
In the “Internet Options” screen select the Advanced tab. Next, press the “Reset” button. The Microsoft Internet Explorer will open the “Reset Internet Explorer” settings prompt. Select the “Delete personal settings” check box and click Reset button.
You will now need to reboot your computer for the changes to take effect. It will restore the Internet Explorer’s settings such as startpage, new tab page and default search engine to default state, disable ad-supported web-browser’s extensions and thereby get rid of the reroute to prestoris.com unwanted web-page.
Disinfect the browser’s shortcuts to remove prestoris.com redirect
Once the ad-supported software is started, it can also change the browser’s shortcuts, adding an argument like “http://site.address” into the Target field. Due to this, every time you open the browser, it will be redirected to an annoying ads.
To clear the internet browser shortcut, right-click to it and select Properties. On the Shortcut tab, locate the Target field. Click inside, you will see a vertical line – arrow pointer, move it (using -> arrow key on your keyboard) to the right as possible. You will see a text which begins with “http://” which has been added here. You need to remove it.
When the argument is removed, click the OK button. You need to clean all shortcuts of all your browsers, as they may be infected too.
Delete unwanted Scheduled Tasks
If the annoying prestoris.com web-site opens automatically on Windows startup or at equal time intervals, then you need to check the Task Scheduler Library and delete all the tasks that have been created by unwanted programs.
Press Windows and R keys on the keyboard at the same time. This displays a prompt that called Run. In the text field, type “taskschd.msc” (without the quotes) and click OK. Task Scheduler window opens. In the left-hand side, press “Task Scheduler Library”, as shown in the figure below.
Task scheduler
In the middle part you will see a list of installed tasks. Select the first task, its properties will be open just below automatically. Next, click the Actions tab. Pay attention to that it launches on your computer. Found something like “explorer.exe http://site.address” or “chrome.exe http://site.address”, then you need delete it. If you are not sure that executes the task, check it through a search engine. If it’s a component of the adware, then this task also should be removed.
Having defined the task that you want to remove, then click on it with the right mouse button and select Delete as shown on the image below.
Delete a task
Repeat this step, if you have found a few tasks that have been created by ‘ad-supported’ application. Once is complete, close the Task Scheduler window.
How to get rid of prestoris.com advertisements with free malware remover
Get rid of prestoris.com ads manually is difficult and often the ad supported software is not completely removed. Therefore, we recommend you to use the Malwarebytes Free that are completely clean your personal computer. Moreover, the free application will help you to remove malware, web browser hijacker and toolbars that your system may be infected too.
- Download Malwarebytes by clicking on the link below.
Malwarebytes Anti-malware
317591 downloads
Author: Malwarebytes
Category: Security tools
Update: April 15, 2020
- Close all software and windows on your computer. Open the file location. Double-click on the icon that’s named mb3-setup.
- This will start the setup of Malwarebytes. Next, press Next button and follow the prompts.
- Once install is done, press on the “Scan Now” button for scanning your machine for the adware that redirects your internet browser to the prestoris.com unwanted web site. This procedure can take some time, so please be patient.
- Once the scanning is done, make sure all entries have “checkmark” and click “Quarantine Selected”. Once the disinfection is done, you may be prompted to restart your PC system.
These steps above are shown in detail in the following video guide.
Block prestoris.com pop-up ads and other annoying pages
To increase your security and protect your personal computer against new unwanted advertisements and malicious web-pages, you need to use program that stops access to harmful ads and pages. Moreover, the application can block the display of intrusive advertising, that also leads to faster loading of web sites and reduce the consumption of web traffic.
Download AdGuard program from the following link.
25653 downloads
Version: 6.4
Author: © Adguard
Category: Security tools
Update: November 15, 2018
When the download is finished, launch the file named adguardInstaller. You will see the “Setup Wizard” screen as on the image below.
Follow the prompts. When the installation is finished, you will see a window as shown on the screen below.
You can press “Skip” to close the setup program and use the default settings, or press “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 do not need to change anything. Each time, when you run your system, AdGuard will start automatically and block pop-up ads, web pages such as prestoris.com, as well as other malicious or misleading web pages. For an overview of all the features of the program, or to change its settings you can simply double-click on the AdGuard icon, which is located on your Windows desktop.
If the problem with prestoris.com redirect is still remained
If MalwareBytes cannot get rid of prestoris.com pop-up ads, then we suggests to use the AdwCleaner. AdwCleaner is a free removal tool for adware, browser hijackers, PUPs, toolbars.
- Download AdwCleaner from the link below.
AdwCleaner download
220728 downloads
Version: 8.3.2
Author: Xplode, MalwareBytes
Category: Security tools
Update: April 28, 2022
- Double click the AdwCleaner icon. Once the utility is started the main screen will appear as shown on the image above.
- Now, click the “Scan” button to begin scanning your PC system for the ‘ad supported’ software which generates prestoris.com advertisements.
- When it has finished scanning, AdwCleaner will show a scan report. Review the report and then click “Clean” button. It will show a prompt, press “OK” button.
The following video explains the step-by-step instructions above on how to remove ‘ad supported’ software with AdwCleaner.
Finish words
After completing the instructions shown above, your system should be clean from malware and adware. The Firefox, Chrome, Internet Explorer and MS Edge will no longer display prestoris.com annoying advertisements and redirect you to unknown web-sites. Unfortunately, if the instructions does not help you, then you have caught a new type of adware, and then the best way – ask for help.
- Download HijackThis by clicking on the link below and save it to your Desktop.
HijackThis download
4164 downloads
Version: 2.0.5
Author: OpenSource
Category: Security tools
Update: November 7, 2015
- Double-click on the HijackThis icon. Next click “Do a system scan only” button.
- When it has finished scanning your PC system, the scan button will read “Save log”, click it. Save this log to your desktop.
- Create a Myantispyware account here. Once you’ve registered, check your e-mail for a confirmation link, and confirm your account. After that, login.
- Copy and paste the contents of the HijackThis log into your post. If you are posting for the first time, please start a new thread by using the “New Topic” button in the Spyware Removal forum. When posting your HJT log, try to give us some details about your problems, so we can try to help you more accurately.
- Wait for one of our trained “Security Team” or Site Administrator to provide you with knowledgeable assistance tailored to your problem with the annoying prestoris.com .
