Make sure to input the same hostname what is used in VC certs and try again.
These are just the warnings about the machine details which you have provided. If you click cancel in this security warning popup you may get "Unable to verify the authenticity of the SSL certificate. Peer Thumbprint:".
In order to procced with conversion you can click on ignore in security warning popup (which will ignore the warning for that time), and you can continue with next steps. You can also view the certificate, if necessary, before ignoring.
If you don't want to see the security warning for this particular machine, then you can check on "Do not display security warning for ......" and click on ignore (this is never show security warning for that particular machine)
Please do let us know if you need any further clarification on this.