Sites not working without dedicated app pool

[DirkE]

Hi

When we create new domains we have to select dedicated application pool for each and every site otherwise the server just returns a service unavailable error.

Where do I look to fix this?

 

[Bender]

Hello,
Actually it is prefered configuration when domains are assigned to dedicated pools. In this case site that have a problem do not affect to another sites.

In your situation i suppose that there is some problem with plesk(default)(pool).

Take a look into the system event log for errors from w3svc service.