Make sure your computer has the correct time as well. I noticed I once dual booted linux and went back to windows my time changed and pascal coin wouldn't sync. Also if still not working somethings up with your rig/router.
That's right!!!! Make sure your time is Ok. A maximum 3 minutes deviation is allowed between nodes ;-)
There should be successful connections before disconnects.
Check your logs and your modem/router.
Get TCPView, you can download it at Micro$oft.
@PascalCoin
Wallet should have peer cache, that should help getting connected to the swarm.
Right now it all seems to depend on 1 successful connect.