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Tag Archives: Defender
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
Tor.exe: Microsoft Defender triggers an "Trojan:Win32/Malgent!MTB" alert
[German]A few hours ago, the Tor browser received a security update that closed a vulnerability. Now Microsoft Defender in the form of Windows Security triggers an alert when the Tor browser is called up and quarantines the tor.exe file. It … Continue reading
Windows Defender Credential Guard: Root cause of Windows 11 22H2 RDP issues?
[German]Since weeks, administrators have been complaining about problems with remote desktop connections that can occur on Windows 11 22H2. Microsoft announced in July 2023 that they are investigating the problem, and there is probably a workaround. Coincidentally, however, a blog … Continue reading
Defender for Endpoint: URL filtering broken?
[German]Quick question to my blog readers. I have received a report that URL filtering.in Defender for Endpoint is broken. In this context, it would be interesting to know if there are other people affected or if the reader is an … 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 ...
Microsoft fixes Windows Defender LSA bug in Windows 11 with update KB5007651 (version 1.0.2306.10002)
[German]Wonders may yet happen. I have the first reports that Microsoft has fixed the Local Security Authority (LSA) issue that has been simmering in Windows 11 for months. It was caused by an update, and as a result, certain features … Continue reading
Windows Defender: High load since update 1.391.2901.0
[German]Microsoft has just rolled out an update for the Windows Defender scan engine to version 1.391.2901.0. Now I have a report that this drives up CPU usage, e.g. when printing. Remedy is to remove the definition update.
Windows 11: Microsoft can't solve the Defender LSA bug – update pulled
[English]Microsoft has been struggling with a "Local Security Authority" problem (LSA bug) in Defender under Windows 11 since March 2023. This LSA bug leads to errors and Defender warnings that cannot be switched off . After several "repair" attempts, the … Continue reading
Windows 11: Defender LSA bug fixed by "removing settings", and more Defender/FASR issues …
[German]Microsoft's unconventional solution for the so-called LSA bug caused by a Defender update in Windows 11. Users got to see the message "Local Security Authority protection is disabled …", but could no longer enable this feature. After several "repair" attempts, … Continue reading
Windows 11: Defender update KB5007651 brings FASR, fixes LAS bug, but still causes issues
[German]Microsoft has released Defender Update KB5007651 for its anti-malware platform, version 1.0.2303.27001 for Windows 11, effective April 18, 2023. The update is intended to fix a Local Security Authority (LSA) bug in Windows 11 and brings "hardware-assisted protection" in the … Continue reading