Category: Blog

Blog ESX VMware
21.07.2026

TPM Encryption Recovery Key Backup Alarm

Immediately after the successful bring-up of the VCF 9.1 environment, the following warning alarm was triggered on all four ESX hosts within the vCenter Cluster Monitor page: “TPM Encryption Recovery Key Backup” This alarm appeared on all hosts simultaneously and was not an indicator of a deployment error, but rather an expected consequence of the hardware and software configuration in use. Root Cause Starting with […]

Blog Linux Ubuntu
17.07.2026

Ubiquiti Travel Router (UTR) and Wireguard VPN Setup

Before diving into the technical details, I want to give credit where credit is due. This whole journey started with a video by my colleague Dennis Schröder. I came across his content, watched his take on the UniFi Travel Router, and was immediately sold. His video is one of those rare pieces of content that doesn’t just show you a product – it makes you […]

Blog Cloud Foundation VMware
15.07.2026

Deploying/Activating VCF Log Management in VCF 9.1.0.400+

Since VCF 9.1.0.x, a lot has changed in the platform — and one of the more noticeable shifts is how Log Management works. It is no longer a standalone virtual appliance you deploy and patch on its own. Instead, it now runs as a service inside the VCF Management Services Cluster, the same Kubernetes-based runtime that also hosts Fleet Management and the other core management […]

Blog Cloud Foundation VMware
13.07.2026

Resetting admin@local Password on VMware VCF Installer Appliance

This guide walks through the process of resetting the admin@local password on the VMware VCF Installer Appliance (previously known as Cloud Builder) when both the admin and root passwords are unknown. This procedure has been tested on VCF 9.1 / ESX 9.1. Prerequisites Step 1 – Interrupt GRUB at Boot Step 2 – Modify Boot Parameters In the GRUB editor, locate the line starting with […]

Blog Dell Dell VxRail
20.04.2026

Dell VxRail: VXR124015 ALARM Host management account no longer valid

VxRail Manager cannot access the ESXi host with the recorded management account information. Once you’ve verified that none of the passwords have expired or been changed, the explanation is relatively simple: This environment uses lockdown mode. Lockdown Mode in vSphere is a security feature that restricts direct access to ESXi hosts and enforces centralized management through vCenter Server. Instead of allowing administrators to connect directly […]

Blog Dell Dell VxRail
19.01.2026

Dell VxRail: Unable to show physical view due to a failure of loading physical view data for the host

In some Dell VxRail environments, the Physical View within the VxRail plugin in the vSphere Client fails to load. Instead of displaying the physical hardware layout of a host, the UI shows an error indicating that the physical view data cannot be loaded. When accessing the Physical View, administrators may see the above mentioned error message. This prevents visibility into the physical components of the […]

Blog Cloud Foundation VMware
10.12.2025

Certificate for ‘Host.domain’ doesn’t match any of the subject alternative names

Before starting your VCF deployment, you should prepare your ESX servers. One part of this preparation is the topic of certificates. You must regenerate the certificates for each ESX server before adding them to the VCF installer. If you do not regenerate the certificates, the above error will occur with an additional message: localhost.localdomain. This means that all of the ESX servers have the same […]

Blog Dell Dell PowerStore
04.12.2025

Dell PowerStore – Local discovery fetch error (0xE04040010004)

More Details: Unable to load system configuration data. Contact your service provider for assistance: Service unavailable. Please retry in a few minutes. So trying again after a few minutes (or even a week) didn’t work. However, this error message appeared immediately after the initial deployment of a “Unified” PowerStore, as soon as you try to login. After a little research and Feedback by my appreciated […]

Blog VMware vSphere
30.09.2025

Changing vCenter IP via DCUI fails

I prepared a demo environment for one of my customers, who requested IP changes at short notice, so I wanted to adjust them over the DCUI accordingly, but I got the following error message: To change IP addresses, netmasks, gateways, and host names in general, there is another option that works on a CLI basis. To do this, open the vCenter Shell. Then we open […]

Blog
17.08.2025

8 Virtual Machine Projects You Need to Build…

8 Virtual Machine Projects You Need to Build This Weekend! 8 Virtual Machine Projects You Need to Build… Build your home lab skills fast with 8 virtual machine projects to build this weekend—backup, storage, firewall, Kubernetes, and more. Broadcom Social Media Advocacy