pleasei use altium 13.
when i auto route a schematic there's many connections without via. there's the trackin toplayer and bottom layerwithout via.
how to correct this problem please thinks
If you have auto route the PCB and ran the DRC this will tell you if you have any unrouted tracks if you have un-routed tracks it will tell you. If this is the case then you may need to move components around because altium automatically places via's when autoroute. I prefer to maully route as autorouters can fail or let you done.