Recently got a new windows 8 laptop and having trouble using features in eclipse. For instance I can't
connect to my local database, can't connect to the eclipse marketplace and even can't run JUnit tests!
(Gives a could not connect to error)

I believe there is something going wrong with the ports, or prehaps its a firewall issue (although I have turned this off and problems persist).

Any advice on how to solve this frustrating issue?

that's pretty vague information you're giving us. can you be a bit more specific?

Ok so the exact error I get when I try to run a junit test is:

Could not connect to: : 56632
java.net.ConnectException: connect: Address is invalid on local machine, or port is not valid on remote machine

And when I try connecting to the eclipse marketplace:

Unexpected exception
java.lang.reflect.InvocationTargetException

I've tried messing around with Preferences->General->Network Connections but doesn't help.

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