Category Archives: Windows

Windows Server 2025: Domain Controller no longer accessible after restart

Posted on 2025-04-18 by guenni

[German]Small addendum to a topic that has been left here for a few days. Microsoft has already confirmed a new problem with Windows Server 2025 in connection with Active Directory Domain Controllers (DC) on April 11, 2025. After restarting the … Continue reading →

Posted in issue, Windows | Tagged , | Leave a comment

Windows 11 24H2: Update KB5055523 (April 8, 2025) may triggers a Blue Screen

Posted on 2025-04-17 by guenni

[German]Microsoft has released the security update KB5055523 for Windows 11 24H2 on April 8, 2025. The update is intended to bring improvements to various functions, update some AI components and close vulnerabilities. Unfortunately, this update can trigger a (SECURE_KERNEL_ERROR) Blue … Continue reading →

Posted in issue, Update, Windows | Tagged , , , | Leave a comment

Windows: Mysterious folder C:\Virus; Trend Micro involved?

Posted on 2025-04-16 by guenni

[German]I am posting a very unusual observation by an administrator among the blog readers here on the blog. He noticed that an ominous folder c:\virus was "suddenly" created on his clients on the system drive. The cause has not yet … Continue reading →

Posted in Security, Windows | Tagged , , | Leave a comment

Windows 11 22H2/23H2: Special update KB5058919 (April 11, 2025)

Posted on 2025-04-15 by guenni

[German]On April 11, 2025, Microsoft released the out-of-band update KB5058919 for Windows 11 22H2 (Enterprise and Education) and Windows 11 23H2 (all versions). This special update had to be released because there were problems with Active Directory group policies.

Posted in Update, Windows | Tagged , | 1 Comment

Windows 10: Updates KB5057589, KB5055674, KB5056474, KB5055769, KB5055768, KB5055770

Posted on 2025-04-15 by guenni

[German]An addendum from April 8, 2025: Microsoft also released various updates for the Windows RE environment for Windows 10 on this date. Further updates for Windows 10 make improvements to the Windows Setup binaries or all files used by Setup … Continue reading →

Posted in Update, Windows | Tagged , | Leave a comment

Windows 11 24H2/Server 2025: Dynamic Update KB5055671

Posted on 2025-04-15 by guenni

Microsoft has released the Dynamic Update KB5055671 (Safe OS Dynamic Update) for Windows 11 24H2 and Windows Server 2025 on April 8, 2025. This update is available via Windows Update and improves the Windows Recovery Environment (Win RE) in Windows … Continue reading →

Posted in Update, Windows | Tagged , , | Leave a comment

Windows 11 22H2/23H2: Dynamic Update KB5056789

Posted on 2025-04-15 by guenni

Short addendum (was offline for a while): Microsoft has released the Dynamic Update KB5056789 for Windows 11 22H2/23H2 on April 8, 2025. This update is available via Windows Update and improves the Windows Recovery Environment (Win RE) in Windows 11 … Continue reading →

Posted in Update, Windows | Tagged , | Leave a comment

Windows: Autopilot error on new 2025 PC with TPM

Posted on 2025-04-15 by guenni

If anyone is using Windows Autopilot and getting a TPM check error on new 2025 PCs, this is a known bug that Microsoft is working on.

Posted in issue, Windows | Tagged , , | Leave a comment

Intune Network Endpoint Update for Windows, Mac, Android

Posted on 2025-04-14 by guenni

Quick reminder for administrators who manage devices via Microsoft Intune. Microsoft is changing the URLs for the endpoint with Windows, Mac and Android. Adjustments are required by the end of April 2025.

Posted in Android, Cloud, macOS, Windows | Tagged , , , , | Leave a comment

Windows PCs at risk from WhatsApp flaw (CVE-2025-30401)

Posted on 2025-04-12 by guenni

[German]A vulnerability in WhatsApp for Windows (before version 2.2450.6) puts Windows computers at risk. The vulnerability could allow attackers to execute malicious code via WhatsApp message attachments on Windows.

Posted in Security, Software, Update, Windows | Tagged , , , , | Leave a comment