Windows 11 24H2/Server 2025: Improved GPP Diagnostics

Windows[German]Brief information for administrators of Windows systems. Microsoft announced on March 4, 2026, that it had improved Windows Server 2025 and Windows 11 24H2 with regard to GPP (Group Policy Preferences) diagnostics. With the January 2026 updates, the event viewer provides significantly more information for entries in Windows 11—this feature is expected to follow later for Windows Server 2025.

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Google Chrome 145.0.7632.159/160 fixes 10 vulnerabilities

[German]Quick note for Google Chrome browser users. On March 3, 2026, Google released a new version of Chrome (145.0.7632.159/160) that fixes 10 vulnerabilities in the browser. Three of these vulnerabilities have already been rated as critical. Google plans to roll out the new version in stages.

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Windows 10: WinRE Update KB5075039 fixes issue from Oct. 2025

Windows[German]Microsoft has re-released update KB5075039 (Windows Recovery Environment  update) for Windows 10 once again on March 3, 2026. It is a WinRE patch that is intended to provide Windows 10, which fell out of support in October 2025, with a working recovery environment again. Here is some brief information on the matter.

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Prepare Windows Server for Secure Boot certificate updates

Windows[German]Auch Maschinen mit Windows Server müssen ggf. ihre Secure Boot-Zertifikate aktualisieren, wenn diese bis Sommer 2026 ablaufen. Microsoft hat die Woche daran erinnert, dass Administratoren ihre Windows Server entsprechend vorbereiten und selbst aktiv werden müssen, da es (im Gegensatz zu Clients) keine automatischen Zertifikats-Updates bei Windows Server geben wird.

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Windows 11 / Server 2025 will continue to support old printer drivers

Drucker[German]A brief update on a topic that caused quite a stir here on the blog in early February 2026, but was then quietly resolved by Microsoft on February 25, 2026. The issue was that Microsoft will be using Mopria printer drivers in Windows 11 and subsequent OS versions in the future. However, Windows 11 will continue to support older drivers.

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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 ...


Vulnerabilities (CVE-2025-59536, CVE-2026-21852) in Anthropic Claude Code

Sicherheit (Pexels, allgemeine Nutzung)[German]Security researchers at Check Point Research have identified critical vulnerabilities (CVE-2025-59536, CVE-2026-21852) in Anthropic's AI-based coding tool "Claude Code." These vulnerabilities allowed remote code execution and the theft of API credentials. This is critical because attackers could abuse built-in mechanisms such as hooks, Model Context Protocol (MCP) integrations, and environment variables. Attackers could execute arbitrary shell commands and exfiltrate API keys when developers cloned and opened untrusted projects. Beyond launching the tool, no further action was required by the user.

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MC1179154: Microsoft Authenticator locks itself when jailbreak/root access is used

Sicherheit (Pexels, allgemeine Nutzung)[German]A quick note for people who use the Microsoft Authenticator app on an iPhone or Android device. Microsoft has announced that, as of February 24, 2026, it will first warn and then block EntraID logins on devices with jailbreak (iOS) or root access (Android) and finally delete the data. This change will be implemented gradually and is expected to be completed by mid-2026.

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Microsoft 365 Local and Azure Local available

[German]Microsoft started to offer Microsoft 365 Local to customers who operate an Azure Local infrastructure. This is a scenario in which the Office 365 apps run on the local Azure structure. It's a strategy to hold up the move to digital sovereignty in Europe.

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Firefox 148.0 with AI killswitch; Firefox 115.33.0 ESR as last update for Windows 7

Mozilla[German]A few days ago, I reported that Mozilla Firefox 115 ESR would be discontinued on Windows 7/8.1. Now, Firefox 115.33.0 ESR has been released as the last update for these operating systems. Mozilla has also released Firefox 148.0 with AI Killswitch. And there is an update to Firefox 140.8 ESR.

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Identify EWS apps and their use prior to EWS shutdown

Exchange LogoMicrosoft is retiring Exchange Web Services (EWS). This process will begin in October 2026 and end with the complete shutdown of EWS in 2027. I recently mentioned this in the German blog post Exchange Online: Zeitplan für das Ende von EWS veröffentlicht (use the translate feature of my German blog). Microsoft has now published a post on how administrators of Exchange Online tenants can identify apps that use EWS and solve the issue.

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