[German]Microsoft hat am 14. Oktober 2025 Sicherheitsupdates für Windows-Clients und -Server, für Office – sowie für weitere Produkte – veröffentlicht. Die Sicherheitsupdates beseitigen 167 Schwachstellen (CVEs), sieben kritisch, drei davon wurden als 0-day klassifiziert und zwei werden ausgenutzt. Nachfolgend findet sich ein kompakter Überblick über diese Updates, die zum Patchday freigegeben wurden.
[German]Microsoft released the "October 2025" security update for Exchange Server on October 14, 2025. The security update applies to Exchange Server 2016, Exchange Server 2019, and, for the first time, Exchange Server Subscription Edition (SE). Exchange Online customers are already protected and are not affected by the update.
[German]On October 14, 2025, Veeam released patch 12.3.2.4165 for its Veeam Backup & Replication product. According to the manufacturer, this patch is intended to eliminate several vulnerabilities. However, a reader informed me that he was unable to install this patch from the ISO file.
[German]It's October 2025, and Statcounter has released its latest figures on desktop operating system distribution for the end of September 2025. With Windows 10 support ending in October 2025, Windows 11 is really the only option for many users. So what exactly do the market shares look like?
A brief announcement that, in my opinion, will have little impact. Microsoft will finally discontinue SharePoint add-ins in Microsoft 365 in spring 2026.
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[German]If you are still using Windows 10 22H2 and plan to create a Windows 11 25H2 installation medium using the Media Creation Tool (MCT), you must not attempt to do so in Windows 10. Microsoft has confirmed that the MCT for Windows 11 25H2 does not work in Windows 10. They are investigating that, but there is a workaround.
[German]Starting in late October 2025, the Microsoft 365 companion apps—People, Files, and Calendar—will be automatically installed on Windows 11 devices with Microsoft 365 apps and will integrate Copilot for contextual AI assistance.
[German]There is a bug that's causing problems with Windows Server 2025 when it is used as a domain controller (DC) and a schema master role is used. In mid-August 2025, I reported that the bug leads to duplicate entries. Microsoft has now confirmed this bug, and the condition, when it occurs, in a Tech Community post.
[German]Since October 4, 2025, security experts at Huntress have observed a sharp increase in compromised SonicWall SSLVPN instances. The nature of the attacks and the speed with which the attackers penetrate the systems suggest that they have valid login credentials.
[German]I have received a report from an IT employee about a strange Word bug that appears to occur after the September 2025 security updates. Word can no longer edit certain documents. It would be interesting to know if there are any other observations of this kind.
MVP:
2013 – 2016
WIMVP:
2017 – 2020
