Category: VMware

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This error occurs due to an outdated PID file of the update microservice or an error during staging of corrupted media.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 […]

Blog VMware
01.08.2025

Looking for a specific VMware Build ISOs @ Broadcom Support Portal?

One of my esteemed colleagues asked me today about a specific vCenter version and told me that, in his view, he can only download the major release of 8.0 U3. The reason why my colleague cannot see the specific versions is that he looked for the ISO images under Product in the VMware vSphere product category, but they can be found under Solutions. Once you […]

Blog VMware vSphere
21.07.2025

Failed to move a VM out of maintenance mode candidate host since the VM is in manual mode!

The vSphere 7 to 8 upgrade (and soon to vSphere 9) series continues successfully, this time I had the above-mentioned challenge during the Check Compliance or Run Pre-Check State inside Image Based Patching. The error message says that there are VMs that cannot be migrated Fully Automated, which is very useful in the context of Image Based Patching. You want to use the luxury of […]

Blog VMware vSphere
18.06.2025

Cannot download VIB: “This might be because of network issues or the specified VIB does NOT exist or does NOT have a proper ‘read’ privilege set. Please make sure the specified VIB exists and is accessible from vCenter”

Keeping an eye on the clock and sensitizing my customer (vSphere 7 EOL, Oct 25), I was on a vSphere 7 environment today where we wanted to install the latest patches. However, I was confronted with the error message above. Let’s fix this real quick, first we need SSH access to our VCSA, via the Shell Command and Stop the VMware Update Manager Service: Now […]

Aria Blog Dell PowerEdge VMware
13.12.2024

Add Dell PowerEdge Servers to VMware Aria Operations

In my previous blog post, I described how to prepare your Dell PowerEdge servers for integration with VMware Aria Operations for comprehensive dashboards and monitoring. This time we will talk about how to configure/add them to Aria Operations. First, get the Dell PowerEdge Management Pack from Dell/Broadcom and then log into your Aria Operations instance. Go to Administration -> Integrations -> Repository. There you will […]

Aria Blog Dell Dell PowerEdge
12.12.2024

Configuring SNMPv3 on Dell iDRAC9 for VMware Aria Operations

I am currently working a lot with VMware Aria Operations and the matching Dell Management Packs that are available. One of the most interesting is the integration of PowerEdge Servers, from which you can view various alarms about: These are exactly the informations I want to integrate into Aria Operations to get/build a dedicated dashboard. In order to send these informations to Aria Operations, SNMPv3 […]

Blog PowerCLI VMware
04.12.2024

PowerCLI: Connect-VIServer The SSL connection could not be established

I wanted to make my life easier again in a customer situation and use my PowerCLI scripts to shorten repeating tasks. The customer had given me an Ubuntu OS notebook and I installed PowerShell/PowerCLI on it. When I tried to use my script, I got the following error message: So it’s all about certificates, let’s take a look at our current PowerCLI configuration: As you […]

Blog VMware vSAN
03.12.2024

The Witness host must not be part of a vSAN enabled Cluster

As part of a vCenter 7 to a brand new vCenter 8 migration, the vSAN clusters had to be moved in addition to the normal clusters. When we disconnected the vSAN Witness Appliance from the old vCenter in the last process and then wanted to add it to the fault domain in the new one, we were confronted with the following error message: Although these […]