Tag Archives: Defender

Windows 10/11: Microsoft Defender can no longer be disabled

Posted on 2023-10-17 by guenni

[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 →

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Tor.exe: Microsoft Defender triggers an "Trojan:Win32/Malgent!MTB" alert

Posted on 2023-09-30 by guenni

[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 →

Posted in Security, Software | Tagged , , | 10 Comments

How to find weak passwords in Active Directory and eliminate them with PowerShell

[Sponsored Post]Weak or compromised passwords are a known gateway for attackers. If you are able to identify which users in Active Directory (AD) are threatened by this, then PowerShell can help to remedy it. However, PowerShell scripts cannot eliminate basic AD deficits, other tools are needed for this. More ...

Windows Defender Credential Guard: Root cause of Windows 11 22H2 RDP issues?

Posted on 2023-08-26 by guenni

[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 →

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Defender for Endpoint: URL filtering broken?

Posted on 2023-08-16 by guenni

[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 →

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Microsoft fixes Windows Defender LSA bug in Windows 11 with update KB5007651 (version 1.0.2306.10002)

Posted on 2023-07-06 by guenni

[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 →

Posted in Security, Update, Windows | Tagged , , | 4 Comments
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Windows Defender: High load since update 1.391.2901.0

Posted on 2023-06-28 by guenni

[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. Advertising

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Windows 11: Microsoft can't solve the Defender LSA bug – update pulled

Posted on 2023-05-19 by guenni

[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 →

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Windows 11: Defender LSA bug fixed by "removing settings", and more Defender/FASR issues …

Posted on 2023-04-30 by guenni

[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 →

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Windows 11: Defender update KB5007651 brings FASR, fixes LAS bug, but still causes issues

Posted on 2023-04-20 by guenni

[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 →

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Special Defender update for Windows installation media (April 2023)

Posted on 2023-04-18 by guenni

[German]Microsoft has recently released a specially customized version of Defender for Windows installation media. The package is available in Windows Imaging Format (WIM) and Virtual Hard Disk (VHD) and includes new definitions that support Windows 11, all editions of Windows … Continue reading →

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