Tag Archives: Defender

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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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 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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Microsoft fixes 5-year-old Defender bug that slows down Firefox

Posted on 2023-04-11 by guenni

[German]A few days ago, Microsoft fixed a bug in Defender that had been known for five years. The bug caused Defender to create a high CPU load on Windows when the Firefox browser was running. Users had to create an … Continue reading →

Posted in browser, Security, Windows | Tagged , , | 2 Comments
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Microsoft confirms: Defender has flagged legitimate URLs or files as malicious (DZ534539)

Posted on 2023-03-30 by guenni

[German]Have you had more frequent messages from Microsoft Defender blocking legitime  URLs the last few days when accessing websites? Or was the access to files blocked because of alleged malware? Microsoft has now confirmed that there was an issue and … Continue reading →

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Windows 11 22H2: Microsoft confirms Defender bug "Local security protection is disabled"

Posted on 2023-03-22 by guenni

[German]I had already reported on issues with Windows Defender on Microsoft Windows 11. Affected people reported a defender warning "Local Security Authority protection is disabled". However, the LSA protection could not be enabled. The bug has been hit Windows 11 … Continue reading →

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Windows 11 22H2 Defender causes "Local Security Authority protection is off" warning

Posted on 2023-03-20 by guenni

[German]Windows 111 22H2 users are annoyed since months by a Defender warning "Local Security Authority protection is off". It seems that it correspondents with Windows Defender update KB5007651. Some registry entries  allow to remove that warning/malfunction. Advertising

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Windows 11: "Windows Security Health Service exe no longer functional" due to Defender update

Posted on 2023-03-18 by guenni

[German]A couple of days ago a German user contacted me with a strong observation. On a fresh installed Windows 11 22H2 he received an event log entry that says (translated) "Windows Security Health Service exe no longer functioning". In addition, … Continue reading →

Posted in issue, Windows | Tagged , , | 4 Comments

Defender Update KB2267602 (v1.383.1400.0 and above) drops install error 0x80070643 – reports low memory

Posted on 2023-03-10 by guenni

[German]Quick question for Windows users and administrators – and specifically for Windows Server administrators – did you encounter Windows Defender signature updates installation errors within the last couple of hours? I'm receiving more and more reader reports that Defender update … Continue reading →

Posted in Security, Software, Update, Windows | Tagged , , , | 3 Comments