We're doing quite a few P2V conversions at the moment, and that means 
that we see all kinds of weird errors, conversion failures, and 
connection issues. P2V is definitely not an exact science. 
One thing that is recommended to have in order is that proper network ports are opened.
If
 you have server with Converter Standalone installed on it, and you have
 trouble connecting to the source physical computer, then first make 
sure that Windows Firewall is disabled. If that doesn't work, then 
install the Converter application directly on the source computer. Then 
you will need outbound 443 TCP connection to vCenter (former Virtual 
Center) (it's assumed that port 443 TCP is open inbound on the vCenter 
server, of course).
To test if ports are open, open a CMD prompt and run following command:
telnet 'vCenter ip' 443
(without
 the ' ') If the DOS prompt goes black, then the connection is good. 
Othervise you will get a 'can't connect' or something similar) 
If you P2V directly to an ESX server, then ports 902, 903, and 443 TCP are used.
If you, for some reason, can't get port 443 opened, then a workaround is as follows:
- Install the Converter directly on the source system
 
- If you have an existing test VM in the same IP range, then create a new disk and attach that to the test VM.
 
- Make a Windows share on the new disk
 
- From
 the Converter choose to export to standalone virtual machine in 
Workstation format and then coose to place files on the share just 
created
 
- After export, change the VLAN to an IP range that doesn't have any firewalls blocking
 
- Import the VM from within vCenter