[German]I have received a user message about problems with virtualization using VMware Workstation Pro 17.x on Windows 11 24H2 clients. One user complains that the guest operating systems run extremely slowly. When VMware Workstation is started as a special administrator, virtualization works as expected.
[German]Nartac Software has already released version 4.0 of its small tool IIS Crypto on February 13, 2025. Support for Windows Server 2025 has been added, as well as support for the TLS_CHACHA20_POLY1305_SHA256 Cipher Suite.
[German]On February 20, 2025, there was a major disruption to the Microsoft Azure Cloud in Norway. The affected services were unavailable for hours. Norwegian authorities and the government were among those severely affected, as they had moved their services to the Microsoft cloud.
[German]I'll take up a topic for the readership that Frank Carius noticed when he recorded an RTP session via UDP using Wireshark. In the recording, he found a large number of UDP broadcast packets on ports 22222 and 3289. Of course, the question immediately arose as to what was causing these UDP broadcasts.
[German]Two weeks ago, Microsoft released CU15 for its Exchange Server 2019. A blog reader contacted me yesterday because he came across a nice change during testing. Server certificates can now (again) be updated directly via GUI – the recourse to PowerShell required with CU14 is no longer necessary.
[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 ...
[German]A quick reminder that Microsoft is getting serious about hardening Windows clients and servers for the Kerberos protocol as early as February 2025. Microsoft has also introduced a string length limit to the Kerberos policy for host names. Here is a reminder of the timelines for phased hardening and string length limitation in the Kerberos host-to-realm policy, which was introduced in February 2025.
[German]Is there a problem with resource consumption by the Virtual Machine Memory Manager (Vmmemcm) in Windows 11 24H2, which then leads to the system freezing? I have had reports of this since December 2024 – and there seems to be a connection with the sandbox.
[German]Security experts from Qualys TRU have discovered two vulnerabilities in the OpenSSH software. In addition, an advisory on another vulnerability was published on February 11, 2024. OpenSSL 3.4, 3.3 and 3.2 are affected by this vulnerability, although upgrades to newer OpenSSL versions are available.
[German]Quick note for administrators of Microsoft Office 365 (or MS365) systems. Microsoft has adjusted the DKIM value for signing emails without much notice.
[German]I am once again addressing the issue of RDP problems under Windows 11 (24H2) here on the blog. After there were already corresponding reports in January 2025, further user comments are appearing that also report problems with Remote Desktop Protocol (RDP) connections in the context of the February 2025 security updates. Here is a brief summary.
MVP:
2013 – 2016
WIMVP:
2017 – 2020
