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Tag Archives: Defender
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."
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
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: 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
Windows Defender reports ExplorerPatcher as PUP
[German]ExplorerPatcher is a tool to customize the Windows 11 desktop in the style of Windows 10 (see this ComputerBase article). Daniel contacted me by email yesterday and reported that Windows Defender has been categorizing the ExplorerPatcher tool as malware for … Continue reading
Microsoft Defender blocks Anydesk clients (since 28 February 2024)
[German]Brief information for everyone. I have just heard from blog readers that the clients of the remote maintenance provider AnyDesk will probably be blocked by Microsoft Defender under Windows from today (28 February 2024). The whole thing is related to … Continue reading
Test Defender rules for ASR, PUA, SmartScreen etc.
[German]How do you know that Windows Defender and its configuration is correctly implemented and working? I just came across a demonstration and test page from Microsoft. Microsoft provides various files and information there to demonstrate, test and validate the Defender … Continue reading
Windows 10/11: Microsoft Defender can no longer be disabled
[German]I'm going to address an old issue that might affect administrators who are migrating clients to Windows 11. In some scenarios, applications run very slowly or the system or applications start sluggishly. The clients are underperforming, even if the application … Continue reading