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Category Archives: Windows
BadSuccessor: Abusing dMSA to elevate privileges in Active Directory
[German]Delegated Managed Service Accounts (dMSAs) have been introduced in Windows Server 2025. These are service accounts for the Active Directory (AD) that are intended to enable new functions. Security researchers have now discovered that by misusing dMSAs, attackers can take … Continue reading
Windows 11 24H2/Server 2025: Why is the May 2025 update KB5058411 over 4.3 GB in size?
[German]On May 13, 2025, Microsoft released the cumulative security update KB5058411 for Windows 11 24H2 and Windows Server 2025 (24H2). This has the incredible size of 4368.9 MByte. This raises the question of what makes the update package so bloated? … Continue reading
Windows Subsystem for Linux is now Open Source
[German]At the BUILD 2025 developer conference, Microsoft announced that it had released WSL (Windows Subsystem for Linux) as open source and is being celebrated by developers. The hope from Redmond is that software developers can now contribute to WSL and … Continue reading
Windows 10: Out-of-Band Update KB5061768 for Bitlocker issue (May 19, 2025)
[German]With the Windows 10 22H2 update of May 13, 2025, there was the problem that numerous systems got stuck in WinRE with a request for the Bitlocker recovery key. When the key was entered, some systems entered a boot loop. … Continue reading
Posted in issue, Update, Windows
Tagged issue, Patchday 5.2025, Update, Windows 10 22H2
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Windows 11 24H2: Update KB5058411 fails with error 0x800f081f
[German]A quick question to the blog readers as to whether the installation of the May 2025 update KB5058411 for Windows 11 24H2 went through. I have received a request from readers asking if I have any information about the KB5058411 … Continue reading
Why ISL Online: Critical factors when choosing a remote desktop solution
[Sponsored Post]In the rapidly evolving IT world, choosing the right remote desktop software is critical for organizations that value security, ease of use and reliability. One provider of secure remote access that has been on the market since 2001 is ISL Online, which presents some considerations for choosing such software below. More ...
Windows 10/11: Defender can be deactivated with a simple tool (Defendnot)
[German]Microsoft has built an interface (API) into Windows 10 and Windows 11 that allows manufacturers of antivirus software to disable Microsoft Defender when they install it. Some people (including a blog reader) have now shown how to deactivate Windows Defender … Continue reading
Windows: Bitlocker encryption via Bitpixie (CVE-2023-21563) leveraged
[German] The Bitlocker encryption used by Microsoft for Windows for data storage devices can be bypassed by software via the Bitpixie vulnerability (CVE-2023-21563) if certain boundary conditions apply. A security researcher has shown how the master key can be read … Continue reading
Windows 11: Will the green screen replace the blue screen in future?
[German]Another article on a topic that has been looming for a while. It seems that in future Microsoft wants to inform users about errors that occur with a so-called green screen. Microsoft says this is to simplify the user interface. … Continue reading
Microsoft confirms Bitlocker boot problems after Windows 10/11 May 2025 update
[German]Update KB5058379 for Windows 10 22H2 from May 13, 2025 causes the operating system to request the Bitlocker recovery key on boot and hang on some systems. Windows 11 also appears to be affected. Microsoft has now confirmed the bug … Continue reading
Posted in issue, Security, Update, Windows
Tagged Patchday 5.2025, Problem, Update, Windows 10
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Out-of-band updates for Windows 11 24H2 LTSC and Windows Server 2008/R2 (May 2025)
[German]A small addendum for administrators of Windows Server 2008/R2. There were out-of-band updates for these operating system versions on May 13, 2025 to close security gaps. And for Windows 11 24H2 Enterprise LTSC, Microsoft has probably also released a special … Continue reading