Trouble shooting VMware Virtual Center failing to start

We restarted the Virtual Center server during a routine maintenance window.

As a rough / quick test we then tried to connect via the client. To our shock, it didn’t connect

Client connection fails

How to Trouble shoot …..Where should you look next ?


Manual Service

Check for a stopped service on the vCenter server.

Start vcenter service

start vc service

In this scenario, check SQL , in the log you can see there is a SQL DB connection issue

VC no SQL connection



Veeam Backup & Replication example

In this example we have VMware vSphere and Hyper-V in Veeam Backup & Replication.
vSphere And HyperV

In vCenter we can see two data center and the VMs running.

In Microsoft Hyper-V we have one Hyper-V server and VMs running.

Unfortunately we have deleted a VM. Ooops. But we can recover using Veeam Backup & Replication to recover the VM


Another VM recovered thanks to Veeam.


PowerActions for vSphere Web Client

PowerActions 1.5.0 is now available for vSphere 6.0 Web Client

“PowerActions integrates the vSphere Web Client and PowerCLI to provide complex automation solutions from within the standard vSphere management client.

PowerActions is deployed as a plugin for the vSphere Web Client and will allow you to execute PowerCLI commands and scripts in a vSphere Web Client integrated Powershell console.”

Download PowerActions 1.5.0 here


VMware vCenter 5 – NFC Server error


NFC Error

In vSphere 5 we moved an ISO from a local drive to a datastore using the VMware Infrastructure Client. Upon instigating the upload it immediately failed.

Error message :  Failed to log into NFC server.

Possible DNS issue with servers for the host?

We found missing DNS entries for the ESXi hosts. The servers specified were referencing DNS IP addresses that had no entries for the ESXi hosts being administered.

Exporting and Importing an OVF file

Exporting a VM or Template to OVF file

1) Select the virtual machine select File > Export > Export OVF Template.
2) Type the Name of the template for the OVF Template
3) Map a drive. Transfer the file

On another vCenter – Deploy an OVF template

1) Open the vSphere Desktop Client.
2) On the top-left, click File
3) Select Deploy OVF Template.
Follow on screen instructions

VMware ESXi 5.1update3 and deploying Red Hat Linux Enterprise 7 x64

Deploying a Red Hat Linux Enterprise 7 x64 virtual machine on ESXi 5.1update3.  

The “Red Hat Linux Enterprise 7 x64” OS options is not available in the drop down list when trying to deploy a new VM from the vSphere client.

Just to confirm, it is supported in ESXi 5.1 update 3 (others might say update 2). (See VMware compatibility guide )

However, to deploy with the option to select Red Hat Linux Enterprise 7 x64 for the OS, you will need to deploy from the web client and not the usual vSphere client.

Just tested with web client with SSO an the VM deployed successfully.

Useful 5.5 article


VM fails to start incorrect version of driver vmci.sys

VMware Workstation 11

VM fails to start incorrect version of driver vmci.sys
Error – You have an incorrect version of driver “vmci.sys”

When I start the virtual machine in VMware Workstation 8 I receive the following error:
You have an incorrect version of driver “vmci.sys”. Try reinstalling VMware Workstation.

A bugy in version 8 has several problems with VMCI

All default VMs have vmci0.present = “true”
In the vmx file

 Fix  –

  1. Open the vmx file related to the vm
  2. Locate and change the following line to vmci0.present = “false”
  3. Save file
  4. Start the VM