Tag Archives: Defender

Microsoft Defender for macOS 101.86.81 issues

Posted on 2022-11-06 by guenni

[German]Mac users who used Microsoft Defender for macOS version 101.86.81 experienced problems (hangs) in connection with Teams. In the meantime, the problem seems to have been fixed by updating Defender before macOS. Advertising

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High CPU load, fan on full speed; Windows Defender struggles with Dell SupportAssist

Posted on 2022-10-03 by guenni

[German]Brief information, which I'll cover in this post. Last week a tweet came to my attention in which a Microsoft MVP complained that the fan on his Windows system was running at full speed. A quick look showed that Microsoft … 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 ...

Microsoft fixes Windows false positive Behaviour:Win32/Hive.ZY alarm

Posted on 2022-09-05 by guenni

[German]Yesterday, Sunday (Sept. 4, 2022), Windows users were very excited when Microsoft Defender reported a Behaviour:Win32/Hive.ZY detection. The whole thing was a false alarm after Microsoft had armed the signatures for this malware via update, because Chromium browsers, Electron framework … Continue reading →

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Windows Defender reports (false positive) Behaviour:Win32/Hive.ZY (Sept. 4, 2022)

Posted on 2022-09-04 by guenni

[German]Short note for Windows users who are startled by Microsoft Defender with a virus detection on their system on Sunday (Sept. 4, 2022). For a few hours now, the Microsoft virus scanner has been reporting a Behaviour:Win32/Hive.ZY as a detection. … Continue reading →

Posted in Security, Software, Windows | Tagged , , | 1 Comment

Windows issue: Defender collides with FMAPOService

Posted on 2022-05-26 by guenni

[German]In April 2022, I had reported issues with Windows Defender on Windows 10 (20H2). From extreme RAM usage to startup problems with Word or effects like black screen after user login has been observed/reported. Some issues were supposedly fixed by … Continue reading →

Posted in Security, Windows | Tagged , , | 6 Comments
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Windows Defender Application Control: Recommended blocking rules (May 2022)

Posted on 2022-05-23 by guenni

[German]In Windows 10 and Windows 11, Windows Defender Application Control (WDAC) and AppLocker are available as features in the enterprise variants (Windows 10/11 Enterprise) as security features (see this post). Now, Microsoft has published a list of recommended blocking rules … Continue reading →

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Microsoft Defender for Business available

Posted on 2022-05-03 by guenni

[German]Microsoft has announced the general availability of Defender for Business as of May 2, 2022. It is a standalone endpoint antivirus protection solution for small and medium-sized businesses. So, the solution goes beyond the Windows-integrated Defender in functionality, providing malware, … Continue reading →

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Defender for Endpoint causes issues with Windows 10 20H2 clients (April 26, 2022)

Posted on 2022-04-30 by guenni

[German]Does Word take an unusually long time to start on Windows 10 clients? Does the Windows 10 20H2 client go into black screen for 2 minutes or more after user login? Or does the event viewer seem to hang when … Continue reading →

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Microsofts Defender flags Google Chrome Updates falsely as malicious (April 20, 2022)

Posted on 2022-04-21 by guenni

[German]Microsoft's Defender for Endpoint (an enterprise security platform, see Got lost in Defender? There is something like a Defender Cheat Sheet available) seems to have run a bit amok once again. Administrators reported that since April 20, 2022, Defender has … Continue reading →

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Defender signatures cause extreme RAM usage (April 2022)

Posted on 2022-04-12 by guenni

[German]Brief information for administrators of Windows systems, especially Windows Server. I have received information that the signature files for Microsoft Defender that have been delivered recently are causing problems. On some Windows Server systems, RAM usage may become unmanageable, affecting … Continue reading →

Posted in issue, Windows | Tagged , , | 5 Comments