Hi

> What version of Firebird are you talking about?
> What version of client are you talking about?
> What *model* of Firebird are you talking about? (Classic/SS?) How does the

service normally start?

> What means are you using, respectively, to stop and restart the server?
> What kind of user are you when you do this?
> Are you saying that tcp/ip connection stops permanently when you do this?

Is the port open? Use tvpview or netstat to check this.
Is there any firewall involved?
Can you connect using telnet 127.0.0.1 3050 ?

Regards,
Steffen