Windows 10: End of support in October 2025 – Million systems about to be replaced?

Windows[German]ESET says, currently 32 million systems with Windows 10 are still in use in Germany. The security company warns of a worst-case scenario, as support for Windows 10 will expire in October 2025. A "switchover" is being propagated. I am of the opinion that Windows 10 users can look forward to October 2025 in a very relaxed manner.

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Operating system/Windows share (End of December 2024)

Windows[German]It's the beginning of 2025 and Statcounter's figures for operating system distribution on the desktop are available for the end of December 2024. What about Microsoft Windows share on the desktop? Windows 10 will no longer be supported after October 2025. With this in mind, how is Windows 11 share on the desktop?

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Windows 11 24H2; Server 2025: msu update install error "Operation is not supported" explained

Windows[German]Microsoft has introduced the so-called Checkpoint Cumulative Updates for Windows 11 24H2 and Windows Server 2025. In September 2024, there were probably first reports of problems, users failed with the error "Operation is not supported". Microsoft has now updated a support article that describes the procedure for successfully installing .msu updates manually on systems with this error.

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Need a Lenovo BIOS simualator?

[German]A little tip for people who may need to document BIOS settings for Lenovo devices. Lenovo offers a BIOS simulator that allows you to retrieve all settings via the Internet and document them with a screenshot.

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What is behind DKIM, SPF and DMARC?

Mail[German]Email security for Security Operations Center (SOC) teams. What is hidden behind terms such as DKIM, SPF and DMARC, which are used to secure email communication?

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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 ...


Happy new Year 2025

I wish this to all blog readers and, above all, good health and optimism in these times.

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38C3: Bitlocker bypassed via vulnerabilities (Dec. 2024)

Windows[German]A small addendum from the weekend – at the 38C3 congress of the Chaos Computer Club, Thomas Lambertz, a security expert, showed how Microsoft's Bitlocker encryption can be circumvented by "downgrading" a patched vulnerability. The way in which secret services or law enforcement agencies can gain access to encrypted data.

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Vulnerabilities in G DATA Business software; fix with version 15.8.333

Sicherheit (Pexels, allgemeine Nutzung)[German]Blog reader Fabian D. accidentally discovered a Privilege Escalation vulnerability in the G Data Security Client at the beginning of April 2024 and was then able to prove a Privilege Escalation vulnerability in the G Data Management Server during targeted research. Both vulnerabilities were reported to G DATA and have been fixed with version 15.8.333 in December 2024.

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Message Trace in Exchange Online as Preview

Exchange Logo[German]Small addendum to Exchange Online. Microsoft has released the preview for "Message Trance" in Exchange Online on December 16, 2024. The function should be activated for all tenants by the end of December 2024. Administrators will then be able to use message tracking in the Exchange Administration Center (EAC) in Exchange Online.

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App-V no longer "deprecated"

Windows[German]A small note for administrators who use Microsoft's App-V technology. Microsoft wanted to withdraw from App-V in April 2026, but has announced that it will continue to support the product in Windows clients and servers. The information must have been published by Microsoft in November 2024. Here is a rough overview of what I read from the announcements.

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