[German]There has been an update to FSLogix version 25.09. Feedback from readers suggests that this fixes the error [58tm1] that frequently occurs in Outlook 365. In addition, the OneDrive bug in Windows Server 2019 that prevented folders from being renamed has reportedly been fixed. Neither error is documented in the FSLogix release notes, so I am highlighting this information separately in a post.
[German]On September 26, 2025, Microsoft lifted an upgrade block for Windows 11 24H2 that had been set for systems with Intel Smart Sound. This block had been in place since September 30, 2024, for systems with Intel 11th Gen Core processors because blue screens were triggered after upgrading to Windows 11 24H2.
[German]Are there any unused licenses in a Microsoft 365 tenant? I happened to come across a post on X where someone presented a PowerShell script that detects such unused licenses.
[German]I'm going to bring up a security issue surrounding Windows 11 24H2 that has been on my mind for about a week now. Security researchers at Zero Solarium have found a way to exploit the Windows file WerFaultSecure.exe to steal LSASS passwords from the cache. On the other hand, security applications can be frozen using WerFaultSecure.exe and a corresponding tool. However, Microsoft Defender detects this attempt to freeze the system. And the LSASS dump requires copying a Windows 8.1 file to the Windows 11 system.
[German]The SonicWall SMA 100 firewall product line will soon no longer be supported. After backup files were recently exposed via MySonicWall Cloud Backup for some customers, SonicWall appears to be responding. There is a firmware update for the SonicWall SMA 100 product line that is designed to remove rootkit malware.
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[German]Today, another post for domain controller administrators. If anyone is thinking about adding a Windows Server 2025 as a domain controller (DC) in a mixed environment, don't do it. Adding the new Windows Server 2025 DC to an existing structure with old Windows Server DCs causes massive problems. The machine password cannot be changed and domain logins fail sporadically. This is a bug in Windows Server 2025 that has not been publicly confirmed, but the Microsoft product group is working on fixing it.
[German]There has been a nasty bug in OneDrive in conjunction with FSLogix since weeks, that occurs on Windows Server 2019, according to a reader observation. OneDrive items can then no longer be renamed. Microsoft Support has already thrown in the towel in this context. Here is a summary of what we know so far.
[German]Two days late, Microsoft has released the preview update KB5066198 for Windows 10 22H2. Among other things, this fixes the SMBv1 bug, which was already eliminated for Windows 11 23H2 on September 23, 2025, via a preview update. I have added the information to the article Windows 10 22H2/Windows 11 23H2: Preview Updates (September 23/25, 2025).
[German]The US Cybersecurity and Infrastructure Security Agency (CISA) has issued an urgent warning to US authorities. Cisco ASA (Adaptive Security Appliance) is under active attack via zero-day vulnerabilities in its web services. US authorities must respond immediately to the vulnerabilities and take countermeasures.
[German]I'm posting a problem here on the blog that an administrator brought to my attention last week. He is still running Windows Server 2016 Essentials and is facing the problem that Windows updates are no longer being offered for it. The question is whether other administrators among our readers have observed something similar?
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MVP:
2013 – 2016
WIMVP:
2017 – 2020
