Microsoft Secure Boot certificates from 2011 begin expiring in June 2026. Here’s how to check whether your Windows PC has the 2023 update.

Microsoft confirmed a Windows zero-click flaw tied to an incomplete patch is being exploited, putting credentials at risk for unpatched users.

Microsoft is testing a new Defender for Endpoint capability that will automatically isolate compromised endpoints to thwart ...

On Wednesday, Microsoft started rolling out security patches for two Defender vulnerabilities that have been exploited in ...

Compare the best free antivirus tools for Windows 10 in 2026, including real-time malware protection, phishing defense, ...

In this post, we will show you how to find the Windows Defender Antivirus signature version in Windows 11. Microsoft Defender is Windows’ built-in antivirus that helps protect your PC from viruses, ...

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Microsoft has confirmed an emergency security update as CISA warns that two new Defender zero-days are being exploited by ...

Microsoft pushed out-of-band patches on May 21, 2026, for two actively exploited Windows Defender zero-days — one that lets a ...

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 ...

PCWorld outlines five essential Windows Defender configuration changes to optimize security and performance on new Windows PCs. Key adjustments include disabling redundant system tray icons, turning ...