Category Archives: Virtualization

Review: Fix for Hyper-V Host Startup Problem in Windows (January 2022)

[Geman]The January 11, 2022 security updates for Windows Server 2012/R2 resulted in the Hyper-V host subsequently failing to start. As of January 17, 2022, Microsoft then released special updates to correct this issue. Here is a follow-up on this issue. … Continue reading

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Installing Windows 10/11 in Hyper-V 2nd Generation

[German]Installing Windows 10 or Windows 11 in virtual environments can present some challenges. Depending on the hypervisor, the installation may even fail completely. Blog reader Thomas S. emailed me back in December 2021 with his experiences installing Windows 10 as … 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 ...

VirtualBox 6.1.32 released

[German]Oracle's developers have released Virtualbox version 6.1.32 on January 18, 2022. It is a maintenance update that is supposed to fix bugs of previous versions. It also improves the HVCI compatibility of the guests for Hyper-V. Advertising

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Windows Server 2012/R2: January 2022 Update KB5009586 bricks Hyper-V Host

[German]Microsoft Hyper-V users running Windows Server 2012/R2 should be cautious about installing update security update KB5009586 or KB5009624 for Windows Server 2012/R2. The security updates released on January 11, 2022 have several unpleasant collateral damages at once. After installing the … Continue reading

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VMware security advisory about vulnerability CVE-2021-22045 in VMware Workstation & Co.

[German]Vendor VMware has issued a security alert for vulnerability CVE-2021-22045 as of January 4, 2022. This vulnerability, located in the CD-ROM driver, threatens the security of VMware Workstation, Fusion and ESXi Server through a heap overflow. However, updates are available … Continue reading

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VMware products threatened by log4j vulnerability CVE-2021-44228

[German]The critical vulnerability CVE-2021-44228 in the JAVA library log4j, which became known a few days ago, threatens millions of software products. For many server products, users can do little. However, I would like to recommend a closer look to administrators … Continue reading

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Azure Confidential Computing with AMD VMs

[German]Microsoft has released an initial preview of Azure DCasv5/ECasv5 (confidential virtual machines with AMD SEV-SNP VM isolation) powered by third-generation AMD EPYC™ processors with SEV-SNP. Advertising

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SentinelLabs finds three vulnerabilities in Oracle VirtualBox

[German]Security researchers from SentinelLabs have taken a closer look at Oracle's virtualization solution Virtualbox, which runs on Windows, macOS and Linux. They found three vulnerabilities in the virtualization tool. A vulnerability in Oracle VM VirtualBox allows program takeover and denial-of-service … Continue reading

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VirtualBox 6.1.30 released

[German]Oracle's developers have already released Virtualbox version 6.1.30 on November 22, 2021. It is a maintenance update that is supposed to fix bugs of previous versions. Advertising

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VMware ESXI 7.0: Windows Server 2012 R2 shows "non-accessible boot device" (Oct. 2021)

[German]It's an issue that seems to have blown up in some administrators' faces in mid-October 2021. VMware ESXI 7.0 administrators were getting a "non-accessible boot device" error message on virtualized Windows Server 2012 R2 machines. Then the server would no … Continue reading

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