Exchange Server 2019: 2025 H1 Cumulative Update (CU15) released

Exchange Logo[German]Microsoft has released the 2025 H1 Cumulative Update for Exchange Server 2019 on February 10, 2024. The CU15 is the last cumulative update for this Exchange version, which will then be withdrawn from support in October 2025. The CU15 contains all security changes that are included in the SU v2 from November 2024, as well as a correction for the known time zone problem in the SU from November 2024 (see also Microsoft Exchange Server Nov. Updates Re-Release (27. Nov. 2024)).

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Law enforcement officials seize 8Base ransomware leak site (10.2.2025)

Paragraph[German]International law enforcement organizations (FBI, Interpol), have seized the leak site of the ransomware group 8Base, with the participation of the Bavarian State Office of Criminal Investigation and on behalf of the Bamberg Public Prosecutor General's Office. In addition, four European suspects were arrested in Thailand.

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Currently massive Outlook / Exchange Online problems (Feb. 2025)?

[German]A quick question for users of Microsoft Outlook with a connection to Exchange Online. Have there been more and more problems with Microsoft Outlook in recent days, with it no longer responding or working extremely slowly?

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Windows 11 24H2: Fix for time zone change released

Windows[German]Back in November 2024, Microsoft had to admit that there was a bug in Windows 11 24H2. On the settings page, standard users cannot make any changes to the time zone in the settings page. This option is only offered to administrators. Microsoft has now fixed the problem.

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Are contacts are suddenly deleted in Microsoft 365?

[German]I have recently received an information from a blog reader who is struggling with the fact that some of his users' Microsoft 365 accounts are sporadically deleting contacts.

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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 ...


Windows 10 users are being forced to use the new Outlook app

Windows[German]I'm pulling out one more topic in this blog post that will concern Windows 10 users in February 2025. Microsoft is pushing the new Outlook app onto systems with the February 2025 security update. At the same time, the Windows Mail and Calendar app will be removed. Let's take a look at the facts.

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Attackers use ASP. NET key to spread malware

Sicherheit (Pexels, allgemeine Nutzung)[German]In December 2024, the Microsoft Threat Intelligence team observed limited activity from an unknown attacker using a publicly available, static ASP. NET machine key to inject malicious code and deploy the Godzilla post-exploitation framework.

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Windows 11 24H2: WSUS issue – missing SNMP client (FOD install fails)

Windows[German]I'm picking up on a topic here in the blog that I've addressed a couple of days ago within my German blog. It likely causes problems for "enthusiastic" Windows 11 24H2 administrators who rely on the SNMP client (or other missing feature). The SNMP client is missing in this Windows 11 version and cannot be installed via Feature one Demand (FOD) because something is "broken", which interferes with administration via WSUS, for example. But now a kind of workaround is known.

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Microsoft 365: Annoying advertising for Python in Excel —

[German]Microsoft just can't help itself and is forcing its business customers in Microsoft 365 to advertise Python in Excel. An administrator among the blog readers pointed this out to me (thanks for that).

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Windows 11 24H2: Oct./Nov. 2024 patches prevent update installation

Windows[German]Microsoft continues to struggle with update issues for Windows 11 24H2. Security updates from October and November 2024 can cause an issue, that affected machines can no longer install subsequent updates if they were set up using USB media or CD/DVD drives with the corresponding installation images. However, Microsoft has now solved the problem.

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