Tag Archives: issue

Microsoft 365: Will emails be automatically deleted again?

[German]I'll bring up another rather crude observation: In the spring of 2025, an administrator reported that contacts and later emails were mysteriously deleted from some of his users' Microsoft 365 accounts, initially sporadically. Now I've come across a similar case … Continue reading

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Windows 11 24H2/Windows Server 2025 is not receiving updates from WSUS

[German]I'm posting a problem on the blog that was brought to my attention by a reader. It concerns WSUS (Windows Services Update Server), which is also to be used for update management for Windows Server 2025. An administrator contacted me … Continue reading

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Windows 11 24H2: Further explanation for SSD issues?

[English]It seems to be turning into a never-ending story: SSD problems under Windows 11 24H2, presumably triggered by the cumulative security update KB5063878 from August 12, 2025. After an explanation and a fix were provided for a Japanese Windows 11 … Continue reading

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Windows 11 24H2: Silent fix for (Japanese) SSD problems?

[German]Microsoft wrote that there is no evidence that the cumulative security update KB5063878 from August 12, 2025, for Windows 11 24H2 causes serious SSD problems. However, there are indications that the preview update KB5064081 from August 29, 2025, contains a … Continue reading

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Windows 11 24H2/Server 2025: IIS Express TLS 1.3 compatibility issue

[German]Since Windows 11 24H2 and Windows Server 2025, there have been problems (Error 500) when testing client certificates with ASP.NET against IIS Express. The reason for this is compatibility issues with TLS 1.3, which only occur with the above-mentioned operating … Continue reading

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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 ...


Has your Microsoft account been hacked? Do you see any unusual activity in your history? – Part 1

[German]I would like to share some brief information with you, along with a question for our readers. It concerns the activity history of your Microsoft accounts. A blog reader informed me that he suddenly noticed access attempts from unknown IP … Continue reading

Posted in Cloud, issue, Security | Tagged , , | 4 Comments

Windows 11 24H2: KB5064081 fixes error in CertificateServicesClient event

[German]Preview update KB5062660 for Windows 11 24H2 released at the end of July 2025 contained a bug that flooded event management with CertificateServicesClient entries (ID 57). This bug has been "addressed" with the preview update KB5064081 released on August 29, … Continue reading

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Fennec browser version 142 with problems

[German]Brief information for users of the Fennec browser on Android. Ralf has just pointed out to me that version 142 from the FDroid store is causing problems – so it should not be updated for the time being.

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Window: Issues with AllowNtAuthPolicyBypass (CVE-2025-26647)?

[German]In April 2025, an update was released to close the CVE-2025-26647 vulnerability in Kerberos authentication. A blog reader pointed out to me in mid-July 2025 that the registry value AllowNtAuthPolicyBypass had been introduced. However, he encountered problems related to the … Continue reading

Posted in issue, Security, Update, Windows | Tagged , , | 3 Comments

Windows: Freezes on Remote Desktop Server due to Trend Micro

[German]I received a reader report complaining about problems with Remote Desktop Server. Various customers are experiencing freezing issues with virtualized Windows Server instances. The strange thing is that this effect occurs at a specific time of day. It could be, … Continue reading

Posted in issue, Security, Software, Windows | Tagged , , , | 3 Comments