Unable to connect to VCenter server

[MShahed]

Hi,

I am getting the error "Vsphere client could not connect to Vcenter. An unknown connection error has occurred. (the request failed because of connection failure.(Unable to connect to remote server).

However, I am able to log in to the host where this VCenter server VM is located. But I am not able to login to the Vcenter server.

When I open the Vcenter server machine from the console, it just showing the blue screen and nothing else is showing up. even the options for restart are greyed out.

I am trying to connect to vcenter server from a different VM where i have installed the Vsphere client. And from this client I am trying to login to Vcenter server. Also, i am not able to take the remote desktop connection of Vcenter windows machine, it just keeps on showing connecting but fails to connect after few mins. So I thought of restarting the Vcenter server machine but couldn't able to restart as the option for restart is greyed out.

[daphnissov]

You may have to forcibly restart the vCenter VM from the ESXi host where it's running using CLI.

[MShahed]

Hi,

Thanks for the reply. Can you please share with me the proper procedure to restart the VMcenter server from the ESXi host using the CLI command?

Thanks in advance.

[Finikiez]

Here the instruction is

VMware Knowledge Base

You can do this with vim-cmd commands or esxcli commands. Both methods should work.