Bug in Java 7 stops FTP on Windows - PLEASE VOTE

[EDT Support]

There's a major bug in Java 7 that prevents ALL transfers on Windows machines!

We've reported it at

It's been accepted, but marked as "low priority". For anyone using FTP on Java/Windows it's certainly a very high priority.

PLEASE VOTE the bug up - .

We're hoping to get it into the .

[EDT Support]

Thanks for your votes. As of 11/11/2011 the bug is now in the .

There's also a lively discussion on reddit, which includes post by a representative of Oracle -

http://www.reddit.com/r/java/comments/m ... nd_thinks/

- Hans (EnterpriseDT)

[EDT Support]

Oracle has analysed the problem and have found that it seems to be a bug in Windows Firewall and/or the IPv6 stack. They managed to replicate the problem with a native C (i.e. non-Java app), so this is strong evidence that the bug is not in Java. They have informed Microsoft, so the ball is in their court now.

More details can be found at http://bugs.sun.com/bugdatabase/view_bu ... id=7077696

[support2]

As explained in the threads, it turns out that it's a problem with the Windows IPv6 stack, which Java 7 uses by default.

A workaround is to switch back to the IPv4 stack by including

-Djava.net.preferIPv4Stack=true

on your command-line.

[EDT Support]

[EDT Support]

[EDT Support]