I am running VCenter 6.0 and VSphere 6. The vcenter version is the Windows installable. I installed missing patches on the server (2012 R2), but when I try to start a VM (either one I created after the restart or any created before the restart), I get this error:
Power On virtual machine:A general system error occurred: No connection could be made because the target machine actively refused it
Please advise. SQL Server is online too and is functioning fine.
In order to isolate the issue, Try to connect to the ESXi directly using the vSphere client and check if you are able to run the machine or you get the same error message.
And please confirm the following as it's not very clear in your post, You have applied certain updates on the windows 2012 R2 which hosts the vCenter and then rebooted this machine then you faced the issue.
Check this KB article out, The Profile-Driven Storage service "services.msc"may have not started properly:
This issue "
I got a fix and start VMware Workflow Manager that is stopped and in my case I am using vCenter & ESXi 6.
I'll jump on the train and report that Starting the VMware Workload Manager Service resolved the issue.
Specific behavior was constant power on events with message: connection refused general system error
If you tried to power on a VM while directly connected to the host with vsphere client, it will fail.
The last note is the VMware Workload Manager was in a not running state. When started, it failed with generic errors but immediately the power on tasks started working across all clusters.
Here is a good VMware KB for vCenter Services: Stopping, starting, or restarting VMware vCenter Server Appliance 6.0 services (2109887) | VMware KB