The Com-system-update.xyz is an unwanted website that designed to fill the web browser’s constant stream of advertisements, or reroute the Microsoft Edge, Mozilla Firefox, Google Chrome and Internet Explorer to not expected and intrusive advertising webpages. If the Mozilla Firefox, Internet Explorer, Edge and Google Chrome started redirecting to the Com-system-update then you need to know that your web-browser has become a victim of an undesired software from the adware (sometimes named ‘ad-supported’ software) family. The ad supported software is created in order to provide third-party advertisements to the user without asking his permission. The ad supported software takes control of web browsers and redirects them to undesired pages like the Com-system-update.xyz every time you surf the Web.
While the system is affected with the adware that responsible for web browser reroute to the annoying Com-system-update.xyz web site, when you start the IE, Google Chrome, MS Edge and Mozilla Firefox or open any page, you may see in your web browser’s status bar the following messages: ‘Waiting for Com-system-update.xyz’, ‘Transferring data from Com-system-update.xyz’, ‘Looking up Com-system-update.xyz’, ‘Read Com-system-update.xyz’, ‘Connected to Com-system-update.xyz’.
Most often, the adware hijacks the most common browsers such as the Google Chrome, Firefox, Internet Explorer and MS Edge. But such the malicious software as well may hijack another browsers by changing its shortcuts (adding an argument such as ‘http://site.address’ into Target field of a web browser’s shortcut file). So every time you run the browser, it will redirect to the annoying Com-system-update.xyz web site. Even if you setup a new homepage, an annoying site will be the first thing you see when you run the Edge, Mozilla Firefox, Google Chrome and IE.
Therefore it is very important to follow the step-by-step instructions below as quickly as possible. The few simple steps will assist you to remove adware as well as clean your PC system from the Com-system-update.xyz popup advertisements. What is more, the guidance below will help you delete other malicious applications like undesired toolbars and browser hijackers, that can be installed onto machine along with the ad supported software.
Remove Com-system-update.xyz pop-up ads (Virus removal instructions)
In the tutorial below we will have a look at the adware and how to delete Com-system-update.xyz from Internet Explorer, Chrome, Microsoft Edge and Firefox internet browsers for MS Windows OS, natively or by using a few free removal tools. Certain of the steps will require you to restart your system or close this website. So, read this guidance carefully, then bookmark or print it for later reference.
To remove Com-system-update.xyz, execute the steps below:
- Manual Com-system-update.xyz pop up ads removal
- Remove potentially unwanted software using Windows Control Panel
- Delete unwanted Scheduled Tasks
- Remove Com-system-update.xyz popup ads from Chrome
- Remove Com-system-update.xyz pop-up ads from Internet Explorer
- Delete Com-system-update.xyz pop ups from Mozilla Firefox
- Disinfect the browser’s shortcuts to remove Com-system-update.xyz redirect
- Scan your system and remove Com-system-update.xyz pop-up advertisements with free utilities
- Stop Com-system-update.xyz redirect and other annoying web-pages
- How can you prevent your machine from the attack of Com-system-update
- To sum up
Manual Com-system-update.xyz pop up ads removal
If you perform exactly the steps below you should be able to remove the Com-system-update.xyz pop-ups from the Chrome, Mozilla Firefox, MS Edge and Internet Explorer internet browsers.
Remove potentially unwanted software using Windows Control Panel
First method for manual adware removal is to go into the Windows “Control Panel”, then “Uninstall a program” console. Take a look at the list of programs on your PC and see if there are any suspicious and unknown programs. If you see any, you need to remove them. Of course, before doing so, you can do an World Wide Web search to find details on the program. If it is a potentially unwanted application, adware or malware, you will likely find information that says so.
Press Windows button 
, then click Search 
. Type “Control panel”and press Enter. If you using Windows XP or Windows 7, then click “Start” and select “Control Panel”. It will display the Windows Control Panel like below.
Further, press “Uninstall a program” 
It will show a list of all apps installed on your computer. Scroll through the all list, and remove any suspicious and unknown software.
Delete unwanted Scheduled Tasks
If the annoying Com-system-update.xyz webpage opens automatically on Windows startup or at equal time intervals, then you need to check the Task Scheduler Library and remove all tasks that have been created by unwanted software.
Press Windows and R keys on your keyboard simultaneously. It will display a prompt that titled with Run. In the text field, type “taskschd.msc” (without the quotes) and click OK. Task Scheduler window opens. In the left-hand side, click “Task Scheduler Library”, as shown in the figure below.
Task scheduler, list of tasks
In the middle part you will see a list of installed tasks. Select the first task, its properties will be display just below automatically. Next, press the Actions tab. Necessary to look at the text which is written under Details. Found something like “explorer.exe http://site.address” or “chrome.exe http://site.address” or “firefox.exe http://site.address”, then you need remove this task. If you are not sure that executes the task, then google it. If it is a component of the malicious application, then this task also should be removed.
Further click on it with the right mouse button and select Delete as displayed on the image below.
Task scheduler, delete a task
Repeat this step, if you have found a few tasks that have been created by malicious apps. Once is complete, close the Task Scheduler window.
Remove Com-system-update.xyz popup ads from Chrome
Use the Reset web-browser utility of the Google Chrome to reset all its settings such as homepage, new tab and default search engine to original defaults. This is a very useful tool to use, in the case of browser redirects to annoying ad pages such as Com-system-update.xyz.
Open the Chrome menu by clicking on the button in the form of three horizontal dotes (
). It will show the drop-down menu. Choose More Tools, then click Extensions.
Carefully browse through the list of installed extensions. If the list has the add-on labeled with “Installed by enterprise policy” or “Installed by your administrator”, then complete the following steps: Remove Chrome extensions installed by enterprise policy otherwise, just go to the step below.
Open the Chrome main menu again, press to “Settings” option.
Scroll down to the bottom of the page and click on the “Advanced” link. Now scroll down until the Reset settings section is visible, as shown on the screen below and press the “Reset settings to their original defaults” button.
Confirm your action, click the “Reset” button.
Remove Com-system-update.xyz pop-up ads from Internet Explorer
By resetting Microsoft Internet Explorer web browser you return your web-browser settings to its default state. This is first when troubleshooting problems that might have been caused by adware that designed to redirect your web-browser to various ad webpages such as Com-system-update.xyz.
First, run the Internet Explorer, then click ‘gear’ icon 
. It will display the Tools drop-down menu on the right part of the internet browser, then click the “Internet Options” as shown in the figure below.
In the “Internet Options” screen, select the “Advanced” tab, then press the “Reset” button. The Internet Explorer will display the “Reset Internet Explorer settings” dialog box. Further, click the “Delete personal settings” check box to select it. Next, press the “Reset” button as shown on the screen below.
When the procedure is done, click “Close” button. Close the Internet Explorer and restart your computer for the changes to take effect. This step will help you to restore your web browser’s search engine, new tab page and startpage to default state.
Delete Com-system-update.xyz pop ups from Mozilla Firefox
If the Mozilla Firefox web browser is redirected to Com-system-update.xyz and you want to restore the Firefox settings back to their original state, then you should follow the steps below. It will save your personal information like saved passwords, bookmarks, auto-fill data and open tabs.
First, start the Mozilla Firefox and click 
button. It will display the drop-down menu on the right-part of the browser. Further, click the Help button (
) as displayed in the following example.
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 shown below. In the upper-right corner of this screen, click the “Refresh Firefox” button.
It will show the confirmation dialog box. Further, click the “Refresh Firefox” button. The Mozilla Firefox will begin a process to fix your problems that caused by the adware responsible for Com-system-update.xyz redirect. When, it is finished, press the “Finish” button.
Disinfect the browser’s shortcuts to remove Com-system-update.xyz redirect
Now you need to clean up the browser shortcuts. Check that the shortcut file referring to the right exe-file of the internet browser, and not on any unknown file.
Click the right mouse button to a desktop shortcut that you use to start your internet browser. Next, choose the “Properties” option. Important: necessary to click on the desktop shortcut for the browser that is redirected to the Com-system-update.xyz or other annoying web-site.
Further, necessary to look at the text that is written in the “Target” field. The ‘ad supported’ software that cause annoying Com-system-update.xyz ads to appear can rewrite the contents of this field, which describes the file to be launch when you start your web browser. Depending on the internet browser you’re using, there should be:
- Google Chrome: chrome.exe
- Opera: opera.exe
- Firefox: firefox.exe
- Internet Explorer: iexplore.exe
If you’re seeing an unknown text similar to “http://site.addres” that has been added here, then you should remove it, as shown on the image below.
Next, click the “OK” button to save the changes. Now, when you launch the browser from this desktop shortcut, it does not occur automatically redirect on the Com-system-update.xyz website or any other annoying sites. Once the step is complete, we recommend to go to the next step.
Scan your system and remove Com-system-update.xyz pop-up advertisements with free utilities
If you are unsure how to get rid of Com-system-update.xyz redirect easily, consider using automatic adware removal applications that listed below. It will identify the adware that causes a huge count of annoying Com-system-update.xyz popup ads and remove it from your PC system for free.
How to automatically get rid of Com-system-update.xyz pop-up ads with Zemana Anti-malware
Zemana Anti-malware is a tool that can remove ad supported software, potentially unwanted applications, browser hijacker infections and other malicious software from your computer easily and for free. Zemana Anti-malware is compatible with most antivirus software. It works under Windows (10 – XP, 32 and 64 bit) and uses minimum of personal computer resources.
Now you can set up and run Zemana Anti Malware (ZAM) to remove Com-system-update.xyz redirect from your internet browser by following the steps below:
Please go to the following link to download Zemana Free setup file called Zemana.AntiMalware.Setup on your PC. Save it on your Microsoft Windows desktop or in any other place.
164032 downloads
Author: Zemana Ltd
Category: Security tools
Update: July 16, 2019
Launch the installer after it has been downloaded successfully and then follow the prompts to install this tool on your computer.
During installation you can change some settings, but we advise you do not make any changes to default settings.
When installation is finished, this malware removal tool will automatically start and update itself. You will see its main window as shown below.
Now press the “Scan” button to perform a system scan for the adware related to Com-system-update.xyz 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 PC. While the Zemana AntiMalware program is scanning, you may see how many objects it has identified as threat.
When the scan get finished, Zemana Free will open a screen that contains a list of malware that has been found. Review the report and then click “Next” button.
The Zemana Free will get rid of adware responsible for redirects to Com-system-update.xyz and add threats to the Quarantine. Once the clean up is finished, you can be prompted to restart your computer to make the change take effect.
Remove Com-system-update.xyz redirect and malicious extensions with Hitman Pro
Hitman Pro will help delete ad supported software which developed to reroute your internet browser to various ad websites like Com-system-update.xyz that slow down your system. The browser hijackers, ‘ad supported’ software and other PUPs slow your browser down and try to force you into clicking on suspicious advertisements and links. HitmanPro removes the adware and lets you enjoy your computer without Com-system-update.xyz pop-up advertisements.
HitmanPro can be downloaded from the following link. Save it on your Microsoft Windows desktop.
After downloading is done, open the folder in which you saved it and double-click the Hitman Pro icon. It will run the Hitman Pro tool. If the User Account Control prompt will ask you want to start the program, click Yes button to continue.
Next, click “Next” . HitmanPro application will scan through the whole personal computer for the adware responsible for redirecting your web browser to Com-system-update.xyz webpage. Depending on your personal computer, the scan can take anywhere from a few minutes to close to an hour.
After Hitman Pro has completed scanning, HitmanPro will produce a list of unwanted and adware as displayed in the following example.
All found items will be marked. You can remove them all by simply click “Next” button. It will show a prompt, click the “Activate free license” button. The HitmanPro will remove adware which cause unwanted Com-system-update.xyz pop-up advertisements to appear and move items to the program’s quarantine. After that process is finished, the tool may ask you to reboot your computer.
Scan and free your system of adware with Malwarebytes
Delete Com-system-update.xyz ads manually is difficult and often the adware is not completely removed. Therefore, we suggest you to run the Malwarebytes Free that are completely clean your computer. Moreover, the free program will help you to remove malware, PUPs, toolbars and hijacker infections that your PC system can be infected too.
- Visit the page linked below to download the latest version of MalwareBytes AntiMalware for Windows. Save it to your Desktop.
Malwarebytes Anti-malware
326385 downloads
Author: Malwarebytes
Category: Security tools
Update: April 15, 2020
- At the download page, click on the Download button. Your internet browser will open the “Save as” prompt. Please save it onto your Windows desktop.
- After the download is finished, please close all applications and open windows on your system. Double-click on the icon that’s named mb3-setup.
- This will launch the “Setup wizard” of MalwareBytes Anti-Malware onto your computer. Follow the prompts and do not make any changes to default settings.
- When the Setup wizard has finished installing, the MalwareBytes Free will launch and display the main window.
- Further, click the “Scan Now” button for checking your computer for the adware which causes undesired Com-system-update.xyz popups. While the MalwareBytes Free is checking, you can see how many objects it has identified either as being malicious software.
- When the system scan is done, you’ll be opened the list of all detected threats on your personal computer.
- Review the results once the tool has finished the system scan. If you think an entry should not be quarantined, then uncheck it. Otherwise, simply press the “Quarantine Selected” button. After the clean-up is finished, you may be prompted to restart the system.
- Close the Anti Malware and continue with the next step.
Video instruction, which reveals in detail the steps above.
Stop Com-system-update.xyz redirect and other annoying web-pages
Use ad-blocker application such as AdGuard in order to block advertisements, 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 machine security. Surf the Internet anonymously and stay safe online!
Download AdGuard from the link below.
26627 downloads
Version: 6.4
Author: © Adguard
Category: Security tools
Update: November 15, 2018
After downloading it, double-click the downloaded file to start it. The “Setup Wizard” window will show up on the computer screen as displayed in the figure below.
Follow the prompts. AdGuard will then be installed and an icon will be placed on your desktop. A window will show up asking you to confirm that you want to see a quick tutorial as displayed on the image below.
Click “Skip” button to close the window and use the default settings, or press “Get Started” to see an quick guide that will help you get to know AdGuard better.
Each time, when you start your system, AdGuard will start automatically and stop popup unwanted advertisements, Com-system-update.xyz redirect, as well as other malicious or misleading sites. 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 can be found on your desktop.
How can you prevent your machine from the attack of Com-system-update
Most of annoying popup advertisements like Com-system-update.xyz ads come from web-browser toolbars, web browser extensions, BHOs (browser helper objects) and additional programs. In most cases, these items claim itself as applications that improve your experience on the Internet by providing a fast and interactive start page or a search engine that does not track you. Remember, how to avoid the unwanted programs. Be cautious, run only reputable software which download from reputable sources. NEVER install any unknown and suspicious software.
To sum up
Once you’ve complete the few simple steps above, your PC should be free from ad-supported software that causes internet browsers to show undesired Com-system-update.xyz ads and other malware. The Chrome, MS Edge, Firefox and Internet Explorer will no longer reroute you to various annoying pages such as Com-system-update.xyz. Unfortunately, if the tutorial does not help you, then you have caught a new adware, and then the best way – ask for help in our Spyware/Malware removal forum.
