Microsoft Defender Archives

Winsage

August 20, 2026

Is Microsoft Defender crashing on your PC? A bad update is breaking scans

Microsoft's built-in security tool in Windows 11 is considered sufficient for most users, but a recent issue has emerged where certain PCs are unable to complete security scans, potentially exposing them to vulnerabilities. Users on Reddit reported problems with Microsoft Defender, specifically with both Full Scan and Quick Scan functionalities failing. One user noted that a recent update may have caused the tool to crash shortly after scans begin, with offline scans stopping at 90-93% completion. The issue may be linked to a Microsoft Security Intelligence update, and some users have found that upgrading to Security Intelligence Update v1.457.236.0 resolved the problem for them.

Winsage

August 20, 2026

I spent time with the August Windows 11 Insider builds, and these 8 changes reveal Microsoft’s next phase for the OS

In early August, there were no new Windows 11 builds released for over 15 days in the Windows Insider Program. On August 17, Microsoft released five new preview builds, introducing several features and enhancements. Key updates include a fully customizable context menu, allowing users to tailor options directly from Settings under Personalization, and improvements to the desktop background experience with higher resolution previews and better slideshow transitions. The Camera Roll backup feature now automatically backs up photos and videos to OneDrive. The Magnifier tool received a visual refresh, and the Windows Recovery Environment was upgraded to reuse eligible Wi-Fi profiles automatically. Microsoft also removed the Windows Management Instrumentation Command-line (WMIC) tool and the Drag Tray feature while maintaining access to WMI through PowerShell. File Explorer improvements include a faster launch for the "Home" page and touch scrolling support in the "Recommended" section. Minor visual adjustments were made to the Windows Security app, enhancing its alignment with the Windows 11 design language.

Winsage

August 19, 2026

Microsoft removes WMIC tool from Windows 11

Microsoft has removed the Windows Management Instrumentation Command-line (WMIC) tool from Windows 11 builds 24H2 and 25H2, as well as beta releases, as part of a deprecation process that began several years ago. WMIC was first deprecated in Windows Server 2012 and Windows 10 and was later made a Feature on Demand in Windows 11 22H2 before its complete removal. The tool had been exploited by malware, including ransomware, for harmful actions such as deleting Shadow Volume Copies and querying security software. Microsoft recommends IT administrators use alternatives like PowerShell, WMI's COM API, or .NET libraries for management tasks.

Winsage

August 19, 2026

Is VLC taking an agonizingly long time to start up on Windows 11? Microsoft Defender is to blame

Users of VLC on Windows 11 have experienced delays of up to 33 seconds for MP3 playback due to a bug in Microsoft Defender that interferes with VLC's plugin cache. VideoLAN has clarified that this issue is not a reflection of VLC's reliability. Affected users can resolve the problem by adding the VLC folder as an exception in Windows Defender or by regenerating the plugin cache. Jonathan Blow, a game developer, highlighted the issue in a tweet, prompting discussions about the state of open-source software. Other users have reported similar delays, even on Windows 10. VideoLAN emphasized that the problem lies with Microsoft Defender, not with VLC itself.

Winsage

August 18, 2026

Microsoft Scrambles To Patch ShieldBreak Zero-Day Flaw In Windows Defender

A new exploit named ShieldBreak, developed by Nightmare-Eclipse, targets Microsoft Defender by allowing privilege escalation and bypassing previous security fixes related to the RoguePlanet vulnerability. ShieldBreak operates on Windows 11 25H2, its Canary channel, and Windows Server 2025, achieving a "100% success rate." Windows 10 may also be vulnerable, but the exploit is specifically designed for Windows 11. There is currently no patch for ShieldBreak, and users are advised to disable Microsoft Defender, implement two-factor authentication, and exercise caution with suspicious online activities. Malwarebytes has recommended its Premium Security antivirus as a temporary solution.

Winsage

August 16, 2026

Devs blame Windows for VLC media player bug that causes 33-second delay when playing MP3 files

VLC, the open-source media player, is experiencing delays of up to 33 seconds when playing MP3 files on Windows 11, attributed to a recent update to Microsoft Defender that conflicts with VLC’s plugin cache. Developer Jonathan Blow criticized VLC for this issue, prompting the VLC team to clarify that the problem stems from Microsoft Defender quarantining the plugins.cache file. Users can resolve the issue by reinstalling VLC or regenerating the plugin cache, although this will reset personalized settings. Adding an exception for VLC in Microsoft Defender may prevent future issues. Microsoft has not yet commented on the situation.

Tech Optimizer

August 16, 2026

Best Free Antivirus Software 2026

Over the past decade, free antivirus software has significantly improved, now competing with paid security suites in malware protection. Independent testing from 2026 shows that Avast and AVG have achieved top scores in protection, performance, and usability. Microsoft Defender is a reliable option for Windows users who prefer not to install additional software. The leading free antivirus options in 2026 include Avast Free Antivirus, AVG AntiVirus Free, Microsoft Defender Antivirus, Bitdefender Antivirus Free, Avira Free Security, and Malwarebytes Free. Avast Free Antivirus received perfect scores of 6/6 in protection, performance, and usability from AV-TEST in May and June 2026, totaling 18 out of 18. AVG AntiVirus Free matched these scores and also received an Advanced+ rating from AV-Comparatives. Microsoft Defender scored 6/6 in protection, 5.5/6 in performance, and 6/6 in usability, totaling 17.5 out of 18. Bitdefender Antivirus Free is recognized for its lightweight protection, while Avira Free Security offers additional utilities. Malwarebytes Free is noted for its effectiveness in malware removal. Antivirus software is essential in the current cybersecurity landscape, which includes threats like ransomware and phishing attacks. In 2025, the FTC reported approximately .8 billion in fraud losses, a 25% increase from the previous year. While antivirus software cannot eliminate all forms of online fraud, it plays a crucial role in preventing attacks from escalating to data theft or system compromise. Users should be cautious of counterfeit antivirus software and are advised to download programs from official vendor websites. Free antivirus solutions generally focus on malware detection, while paid options offer additional services. For Windows 11 users, Avast Free Antivirus, AVG AntiVirus Free, and Microsoft Defender are recommended options based on 2026 evaluations.

Winsage

August 16, 2026

Microsoft releases new Defender update for Windows 11, 10, Server ISO installations

Microsoft released its August 2026 Patch Tuesday updates, including the latest Defender package for ISO installations. The updates are aimed at combating malware threats and are issued approximately every three months for Windows installation images (WIM and VHD) and ISOs. The latest Windows 11 update is available through the Media Creation Tool (MCT). The security definitions were delivered through security intelligence update version 1.455.50.0, applicable to various platforms including Windows 11, Windows 10 ESU, Windows Server 2022, and others. The update includes enhancements to the anti-malware client, engine, and signature versions, with platform version 4.18.26070.9, engine version 1.1.26070.7, and security intelligence version 1.455.50.0. The previous security intelligence update was version 1.447.236.0, which introduced detections for various malware types. The most recent intelligence update is version 1.457.181.0.

Tech Optimizer

August 15, 2026

A Windows Defender bug is making VLC take 30 seconds to open an MP3 file

Jonathan Blow criticized the VLC media player for significant performance issues, specifically a 33-second delay in loading MP3 files, and announced his intention to switch to Microsoft Media Player. The VideoLAN team responded, attributing the delays to a known issue with Microsoft’s Windows Defender antivirus software, which quarantines the VLC plugin cache. They suggested users could resolve the issue by reinstalling VLC or regenerating the plugin cache. VLC has been downloaded over 6 billion times across various platforms. Microsoft Defender has been known to cause false positives and interfere with third-party applications. Some users have found success using alternative antivirus solutions like Bitdefender Antivirus Free to avoid conflicts with VLC. Additionally, there are suggestions that using VLC for MP3 playback may not be practical, and switching to Microsoft Media Player is viewed unfavorably compared to alternatives like Foobar2000.

Winsage

August 15, 2026

Devs blame Windows for VLC media player bug that causes 33-second delay when playing MP3 files — creators allege Microsoft Defender blocking plugin cache is to blame

VLC, an open-source media player, is experiencing delays of up to 33 seconds when playing MP3 files on Windows 11, attributed to a bug in Microsoft Defender from a recent update that affects VLC's plugin cache. The VLC development team suggests that reinstalling VLC or regenerating the plugin cache can resolve the issue.