According to security researchers, ExtendedWindow is classified as an adware program. Adware can cause issues for your Mac. It can display unwanted advertising on your computer screen so that your cannot stop them, redirect your internet browser to shady web-sites, and it can cause unwanted web-sites to pop up on your web browser. Adware might end up on your machine after you download and install free applications from a questionable web-site.
Unwanted ads
Does adware software steal your privacy information? Adware can install a component that enables its creator to track which webpages you visit, which products you look at upon those pages. They are then able to select the type of advertisements they show you. So, if you had adware software on your MAC system, there is a good chance you have another that is gathering and sharing your confidential information with third parties, without your say-so.
How does ExtendedWindow get on your machine
The most popular method to get adware is freeware setup package. Most often, a user have a chance to disable all optional modules, but some setup files are designed to confuse the average users, in order to trick them into installing PUPs and adware software. Anyway, easier to prevent adware software rather than clean up your computer after one. So, keep your web-browser updated (turn on automatic updates), run good antivirus applications, double check free applications before you launch it (do a google search, scan a downloaded file with VirusTotal), avoid suspicious and unknown web-pages.
Threat Summary
| Name | ExtendedWindow, Extended Window 1.0 app |
| Type | adware, potentially unwanted application (PUA), pop up ads, pop ups, popup virus |
| Symptoms |
|
| Removal | ExtendedWindow removal guide |
How to remove ExtendedWindow adware
We can help you get rid of ExtendedWindow ads from your web-browsers, without the need to take your computer to a professional. Simply follow the removal instructions below if you currently have the unwanted adware software on your computer and want to get rid of it. If you’ve any difficulty while trying to remove the ExtendedWindow , feel free to ask for our assist in the comment section below. Read this manual carefully, bookmark it or open this page on your smartphone, because you may need to exit your web-browser or restart your MAC.
To remove ExtendedWindow, complete the steps below:
- How to remove ExtendedWindow without any software
- Automatic Removal of ExtendedWindow
- How to stay safe online
- To sum up
How to remove ExtendedWindow without any software
Looking for a solution to delete ExtendedWindow manually without downloading any utilities? Then this section of the article is just for you. Below are some simple steps you can take. Performing these steps requires basic knowledge of web-browser and Microsoft Windows setup. If you doubt that you can follow them, it is better to use free tools listed below that can help you remove adware software.
Delete ExtendedWindow related applications through the Finder
First of all, check the list of installed applications on your MAC and uninstall all unknown and recently installed apps. If you see an unknown application with incorrect spelling or varying capital letters, it have most likely been installed by malware and you should clean it off first with malicious software removal utility like MalwareBytes Anti Malware (MBAM).
Open Finder and click “Applications” as displayed on the image below.
You will see a list of software installed on your MAC system. We recommend to pay maximum attention to the program you installed last. Most probably, it is the ExtendedWindow adware. If you’re in doubt, you can always check the program by doing a search for her name in Google, Yahoo or Bing. When the program which you need to uninstall is found, simply right click on its name, and choose “Move to Trash”.
Don’t forget, select Finder, then “Empty Trash”.
Get rid of ExtendedWindow from Firefox
Resetting Mozilla Firefox web-browser will reset all the settings to their default values and will remove ExtendedWindow ads, malicious add-ons and extensions. Your saved bookmarks, form auto-fill information and passwords won’t be cleared or changed.
First, launch the Firefox and click 
button. It will display the drop-down menu on the right-part of the web browser. Further, press the Help button (
) as shown below.
In the Help menu, select the “Troubleshooting Information” option. Another way to open the “Troubleshooting Information” screen – type “about:support” in the internet browser adress bar and press Enter. It will display 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 open the confirmation dialog box. Further, click the “Refresh Firefox” button. The Firefox will start a process to fix your problems that caused by the ExtendedWindow adware. Once, it is finished, click the “Finish” button.
Remove ExtendedWindow from Google Chrome
Reset Google Chrome settings will help you to completely reset your web-browser. The result of activating this function will bring Google Chrome settings back to its default state. This can remove ExtendedWindow ads and disable malicious plugins. It will keep your personal information such as browsing history, bookmarks, passwords and web form auto-fill data.
- First, start the Google Chrome and press the Menu icon (icon in the form of three dots).
- It will open the Google Chrome main menu. Select More Tools, then press Extensions.
- You will see the list of installed extensions. If the list has the addon 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, press 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 Chrome will open the reset settings prompt as on the image above.
- Confirm the internet browser’s reset by clicking on the “Reset” button.
- To learn more, read the article How to reset Chrome settings to default.
Get rid of ExtendedWindow adware from Safari
If you find that Safari browser settings such as startpage, new tab and search engine having been modified by ExtendedWindow , then you may restore your settings, via the reset browser procedure.
Run Safari browser. Next, select Preferences from the Safari menu.
First, click the “Security” tab. Here, choose “Block pop-up windows”. It will stop some types of pop-ups.
Now, click the “Extensions” tab. Look for dubious extensions on left panel, choose it, then press the “Uninstall” button. Most important to remove all questionable add-ons from Safari.
Once complete, check your startpage and search provider settings. Click “General” tab. Make sure that the “Homepage” field contains the website you want or is empty.
Make sure that the “Search engine” setting shows your preferred search provider. In some versions of Safari, this setting is in the “Search” tab.
Automatic Removal of ExtendedWindow
Spyware, adware software, PUPs and hijackers can be difficult to delete manually. Do not try to remove this applications without the aid of malware removal tools. In order to fully get rid of adware from your computer, run professionally created utility like MalwareBytes Free.
How to automatically remove ExtendedWindow with MalwareBytes Free
We recommend using the MalwareBytes Free. You can download and install MalwareBytes to look for adware software and thereby remove ExtendedWindow ads from your browsers. When installed and updated, this free malicious software remover automatically identifies and removes all threats present on the MAC system.
- Click the following link to download the latest version of MalwareBytes Anti Malware (MBAM) for Mac OS.
Malwarebytes Anti-malware (Mac)
20841 downloads
Author: Malwarebytes
Category: Security tools
Update: September 10, 2020
- Once the downloading process is done, close all applications and windows on your machine. Open a directory in which you saved it. Run the downloaded file and follow the prompts.
- Click the “Scan” button to perform a system scan for the ExtendedWindow adware. This task can take quite a while, so please be patient. When a malware, adware software or potentially unwanted applications are detected, the number of the security threats will change accordingly.
- After MalwareBytes Anti Malware (MBAM) completes the scan, MalwareBytes Free will open a screen which contains a list of malicious software that has been detected. In order to remove all items, simply click “Remove Selected Items”.
How to stay safe online
It’s also critical to protect your internet browsers from harmful websites and ads by using an ad-blocking program like AdGuard. Security experts says that it will greatly reduce the risk of malware, and potentially save lots of money. Additionally, the AdGuard can also protect your privacy by blocking almost all trackers.
Download AdGuard by clicking on the following link.
3677 downloads
Author: © Adguard
Category: Security tools
Update: January 17, 2018
Once downloading is finished, run the downloaded file. You will see the “Setup Wizard” screen. Follow the prompts.
Each time, when you start your MAC OS, AdGuard will start automatically and stop intrusive pop up ads, block malicious and misleading web-pages.
To sum up
Once you have complete the few simple steps shown above, your MAC OS should be free from ExtendedWindow and other malware. The Chrome, Safari and Mozilla Firefox will no longer display any unwanted ads. Unfortunately, if the few simple steps does not help you, then you have caught a new adware, and then the best way – ask for help here.
