When you launch Windows Security on Windows 11, you may see a message You’re using other antivirus providers. This prevents you from activating the Real-time protection of Windows Defender against ...

If you use a Windows laptop in 2025, chances are you store important files on it: work documents, school projects, bank details, or personal photos. Unfortunately, the more connected we are, the more ...

Updating our security testbeds is a massive undertaking. We explain what goes into the decision of making the move to Windows 11 for our hands-on testing of antivirus apps. When the IBM PC was new, I ...

Microsoft Defender had one of the rare moments of not being at the best in AV-TEST's previous result. The product suffered a heavy defeat and came in last place. This is the opposite of what typically ...

Toggle the Real-time protection switch off. You may receive a User Account Control (UAC) prompt asking if you want to allow the change to occur. Select Yes. When you're ready to turn system protection ...

You need antivirus software. Attacks on your PC keep getting more sophisticated, thanks to the help of AI—we’re seeing more and more AI-fueled attacks as the months tick by. Even the tech-savvy and ...

As malware, ransomware, phishing, and AI‑enabled scams continue to grow in frequency and sophistication worldwide, the demand for layered, intelligent Windows antivirus has never been more critical.

In a proof-of-concept, a security researcher demonstrated how the Windows Security Center API can be used to block the scans by Microsoft’s built-in antivirus tool. Windows Defender can be tricked ...

One of the telltale signs that your PC has become ill with a virus is an unexpected slowdown in performance. Various forms of malware can sometimes feast on your system's resources, whether it's a ...