Category: VMware

Blog VKS / Tanzu VMware
16.10.2026

VKS Update fails with “supervisor content is being processed”

While preparing an update of our Supervisor cluster (VKS01) from v1.32.9 to v1.33.13 on vSphere 9.1, the update wizard looked perfectly healthy at first: the pre-checks in step 1 turned green. Then, in step 2 (“Review”), the wizard refused to continue with this error: A general system error occurred. Error message: supervisor content is being processed. The message is generic and does not tell you […]

Blog Cloud Foundation ESX VMware
05.10.2026

Upgrading ESX in VCF 9.1.1 from VCF Operations: “There are no images available”

Another field report from a VCF 9.1 → 9.1.1 upgrade: why the ESX step of the Configure Upgrade wizard asks for an image maybe didn’t configured yet, how to create and import it, what the prechecks said. Abstract Prerequisites: The ESX upgrade comes after SDDC Manager, NSX and vCenter in the management domain sequence. Before you start, make sure that: The Component Versions view of […]

Blog Cloud Foundation NSX VMware
03.10.2026

VCF 9.1 → 9.1.1: “Failed to upload NSX bundle” in the NSX Upgrade Coordinator

Today I wrote a field report from a VMware Cloud Foundation 9.1 to 9.1.1 maintenance upgrade: the order that matters, the error that stopped the NSX Manager upgrade, how to prove the bundle was not the problem, and what got the upgrade moving again. Abstract Prerequisites: Everything above NSX must already be on 9.1.1 Before touching NSX, be clear about where you are in the […]

Blog NSX VMware
29.09.2026

VCF 9.1: Fixing an Exhausted NSX TEP Pool

While running a Host Add Workflow in my VCF 9.1 environment, the validation step “Validate IP Address Availability for Edge Overlay (TEP) IP Assignment” failed right away with the following error: The message is pretty clear: the Host Add workflow needs 4 new tunnel endpoint (TEP) IP addresses, but the NSX IP address pool that provides them is completely used up. Every overlay-enabled transport node […]

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 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 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 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 VMware vSphere
06.08.2025

vSphere 8 Update fails: Error in method invocation Timout happens while sending message to microservice

This error occurs due to an outdated PID file of the update microservice or an error during staging of corrupted media. Strangely enough, I requested the update via the VAMI interface (port 5480), so it may have been corrupted during download. As always, there is a solution, and this time there are even three. The first solution is to restart vCenter, but this did not […]