[German]A short addendum for administrators of Microsoft Exchange Server 2016 and 2019: Microsoft has already published so-called hotfix updates for the Exchange Server versions mentioned on May 29, 2025. The hotfixes from May 2025 do not contain any new Exchange Server security updates, but corrections for non-security-related problems.
[German]Brief note for administrators of clients with Windows 11 24H2.clients and Windows Server 2025 hosts. Microsoft has integrated the Kerb3961 library into these operating systems. This is a refactoring of the Kerberos cryptography engine in a separate library and shall improve the etype handling in networks.
[German]Since the beginning of June 2025, users have been complaining that they can no longer use the Google Chrome browser while Microsoft Edge works. Windows 11 (and probably also Windows 10 and macOS) are affected. The cause is probably the installed Microsoft Family Safety, which "incorrectly" blocks the Google browser and makes it unusable. The workaround is to rename the browser or set certain filter conditions.
[German]Drivers distributed automatically via Windows Update are a frequent annoyance, especially when newer drivers are simply replaced. Microsoft now wants to stopp distributing older and therefore unwanted drivers for Windows systems via Windows Update. The whole thing is to be implemented step by step as a strategic approach in order to improve the security of the Windows ecosystem at the end of the day.
[German]Does anyone have the problem that their OneDrive search no longer returns any results, but shows empty results even though files should be found? Since January 2025, users have been complaining about a broken OneDrive search. Microsoft has now acknowledged such a problem and is investigating the issue.
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[German]VMware by Broadcom has released its long-announced VMware Cloud Foundation 9.0 on June 17, 2025. VMware Cloud Foundation 9 (VCF 9) is sold to customers as a private cloud suite.
[German]Security researchers from Qualys TRU have uncovered two linked, critical vulnerabilities in Linux. Starting with SUSE 15, the LPE chain leads directly to root access in standard configurations of many Linux distributions.
[German]Brief information for readers who use ASUS Armoury Crate on their Windows systems. The vulnerability CVE-2025-3464 in the software allows an attacker to gain administrator privileges under Windows. ASUS has since updated the software to close the vulnerabilities.
[German]Various German blog readers have informed me that the provider Citrix has published several security advisories on critical vulnerabilities in the Netscaler ADC (and Gateway, and Secure Access Client for Window) as of June 17, 2025. Administrators are requested to update the affected products to the fixed versions as soon as possible.
[German]Users of the virtualization platform Proxmox and KVM/QEMU get BlueScreens on virtualized Windows VMs as soon as they install the June 2025 updates. It affects (Proxmox) hosts with AMD CPUs (Ryzen & Epyc). And I got reports, that Linux KVM / QEMU is also affected with it's Windows VMs. The error is known and there is also a workaround.
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MVP:
2013 – 2016
WIMVP:
2017 – 2020
