Windows Warning Alert, which shown in your web browser, is a popup alert to try and get you to either buy “Windows Defender” or to call the number 1-833-820-8247. There is a legitimate program called Windows Defender that is installed when Windows is installed; however, if your computer is infected with a computer virus, there was be a fake version, known as randomware, on your computer. If you are just getting popups, and they are due to the websites you are visiting, you can close out, but we recommend that you at least check to see that there aren’t any vulnerabilities in your computer. Below is how the website looks.
It reads “Windows Warning Alert” and “Please call us immediately at” and “Do not ignore this critical alert”. Remember, as this is your own computer, it is important for you to secure your data and act to remove any virus from your computer that may compromise the system.
If the popup continues to come, if could be from a malicious add-in. In Firefox and Chrome, it likely hides as an extension; in Internet Explorer, it likely hides as an Add-on. However, just removing the add-in or extension may not be a permanent so you may have to find the program on your computer making the change. Issues like this can be quite frustrating, and it best to remove issues like this to protect your information and data in the computer.
The most efficient way to remove it is to scan your computer to find this issue, with other potential issues. If you would like to go the free route with a quality program, we recommend that you scan your computer with Malwarebytes Anti-Malware. Whereas most antivirus and antimalware programs cost money, Malwarebytes Anti-Malware has a free version which will identify and remove viruses. We have a full guide on how to download and use Malwarebytes Anti-Malware, including a download link on the page, and a video further below on how to use the program. The paid version is if you would like real-time protection. The reason why Malwarebytes is able to be free is that it has an outstanding community behind it.
The video below provides how to use Malwarebytes Anti-Malware.
Good luck, and let us know of any questions you have below. We are here to help!