Category Archives: Virtualization

Do we need RDS licenses for Citrix Virtual App/Desktop environments?

Do we actually need Microsoft RDS licenses if we run an environment with Citrix Virtual App/Desktop? Citrix has discussed this in the article Do We Need RDS Licenses For Citrix Virtual App/Desktop Environment. Short answer: yes, you need both Citrix … Continue reading

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How to log off disconnected Citrix sessions after 1 hour via power shell

[German]A short tip for administrators of Citrix solutions (Citrix Virtual Apps and Desktops Service). Sometimes administrators are need to log off users whose sessions have been in disconnected state for a long time. There is a PowerShell solution from Citrix … Continue reading

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How to find weak passwords in Active Directory and eliminate them with PowerShell

[Sponsored Post]Weak or compromised passwords are a known gateway for attackers. If you are able to identify which users in Active Directory (AD) are threatened by this, then PowerShell can help to remedy it. However, PowerShell scripts cannot eliminate basic AD deficits, other tools are needed for this. More ...

Windows Server 2019: Container feature cannot be installed (0x800F0831, 0x80073701)

[German]Around the out-of-band update for the Hyper-V issue with Windows Server 2019/2022, a blog reader contacted me. He is experiencing an issue where the Container feature cannot be installed as a role on Windows Server 2019. The installation attempt aborts … Continue reading

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Windows Server 2019/2022: Out-of-Band Updates fixes Hyper-V Issue (Dec. 20, 2022)

[German]The security updates rolled out by Microsoft on the December 2022 patchday lead to problems with Hyper-V in certain constellations. New VMs can no longer be created, existing VMs have problems with Ethernet connections, etc. Microsoft has now released a … Continue reading

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Windows Server 2019/2022: December 2022 security updates cause Hyper-V issues

[German]The security updates rolled out by Microsoft on the December 2022 patchday lead to problems with Hyper-V in certain constellations. New VMs can no longer be created, existing VM have problems with Ethernet connections, etc. Microsoft has admitted to these … Continue reading

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VMware vulnerability CVE-2022-22954 threatened by ransomware, end of support for ESXi 6.5 & 6.7

[German]Various VMware products contain the critical vulnerability CVE-2022-22954 , for which a security update was provided back in April 2022. I had addressed the vulnerability in the blog post Warning: critical vulnerabilities in VMware products (April 6, 2022). Advertising

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VirtualBox 7.0.2 released

[German]Oracle's developers had just released VirtualBox version 7.0.0 (VirtualBox 7.0.0 with Secure Boot and virtual TPM support), and now they have already pushed an update to version 7.0.2. This version is a maintenance update for bug fixes. Advertising

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VirtualBox 7.0.0 with Secure Boot and virtual TPM support

[German]Oracle's developers have released the new Virtualbox version 7.0.0 on October 10, 2022. Secure Boot has been implemented in the EFI in this version. In addition, this version can emulate virtual TPM 1.2 and 2.0, which comes into play for … Continue reading

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Mandiant, VMware and US-CERT warn of malware targeting VMware ESXi servers

[German]Google-acquired security vendor Mandiant has encountered a new malware family (VirtualPITA, VirtualPIE, and VirtualGATE) that targets virtualization solutions like VMware ESXi Server and uses specialized techniques to infiltrate. VMware has issued a security advisory to that effect, and US-CERT is … Continue reading

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Security for Kubernetes: Pitfalls and Solutions

The use of virtualized containers with functions is in vogue. Orchestration solutions, such as Kubernetes, are used to manage the containers. However, if this solution is compromised, this affects all managed containers. The question therefore arises about the security of … Continue reading

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