Social networks
Awards
MVP:
2013 – 2016
WIMVP:
2017 – 2020
Tag Archives: Defender
Windows Defender Crashes During a Quick Scan (August 18, 2026)
[German]Brief question for the Windows users among my blog readers: Did any of you experience problems with Microsoft Defender on Windows 10 or Windows 11 on August 18, 2026? I've received two reports from readers stating that Microsoft Defender crashes … Continue reading
I: Microsoft Defender flags Synology backups as a Trojan (August 3, 2026)
[German]A German blog reader contacted me about a strange behavior, he faced on hypervisors. Microsoft Defender flags Synology backups on the affected user's servers as a Trojan. As a result, the backups no longer run. The reader wrote to me … Continue reading
Posted in computer, issue, Security, Virtualization, Windows
Tagged Backup, Defender, issue, Synology, Windows Server
Leave a comment
Microsoft says that Defender is sufficient for virus protection
When it comes to virus protection and securing Windows, the market for third-party antivirus solutions is shrinking. Microsoft claims that Microsoft Defender, which comes bundled with Windows, is actually sufficient as a security solution to protect against viruses and malware.
Windows Defender 0-days: BlueHammer (patched) and RedSun (unpatched)
There are several critical vulnerabilities in Microsoft Defender, that put Windows systems at risk. A security researcher has published an 0-day-exploit named BlueHammer on April 3, 2026, that has been patched on April 14, 2026. But there is still an … Continue reading
Microsoft Defender bug reports incorrect BIOS update notifications
[German]Owners of Dell devices running Windows may currently be surprised by Defender false positives reporting a "BIOS update."
Why ISL Online: Critical factors when choosing a remote desktop solution
[Sponsored Post]In the rapidly evolving IT world, choosing the right remote desktop software is critical for organizations that value security, ease of use and reliability. One provider of secure remote access that has been on the market since 2001 is ISL Online, which presents some considerations for choosing such software below. More ...
Windows 10/11: Defender can be deactivated with a simple tool (Defendnot)
[German]Microsoft has built an interface (API) into Windows 10 and Windows 11 that allows manufacturers of antivirus software to disable Microsoft Defender when they install it. Some people (including a blog reader) have now shown how to deactivate Windows Defender … Continue reading
WSUS/ConfigMgr: No Defender updates since May 2, 2025
[German]A short note for administrators who distribute updates for Microsoft Defender via WSUS or ConfigMgr (MECM ). There was probably a problem at Microsoft, so that the update distribution has stalled since May 2, 2025, although updates are available from … Continue reading
Windows 11 24H2: Upgrade from Home to Pro causes issue with Microsoft Defender for Endpoint
[German]If someone upgrades a new computer with Windows 11 24H2 Home later to the Pro version (requires a corresponding license), he will run into issues, if Microsoft Defender for Endpoint shall be used. The system cannot be integrated into Microsoft … Continue reading
Microsoft Defender: msmpeng.exe crashes (August 14, 2024)?
[German]We had Microsoft's patch day on August 13, 2024, and as a result quite a lot of Windows patches. I got now a report from an English-speaking reader pointed out to me last night that people were having issues with … Continue reading
Windows 10: What generates masses of mat-debug*.log files?
[German]I'm posting another topic here on the blog that a reader asked me about at the beginning of May 2024. He notes that the Defender Core service under Windows 10 Pro was started unexpectedly just over a month ago. Since … Continue reading