Are you tired of getting the "Game Creation Failed" prompt when trying to create a server, and have no idea what to do? I'll show you how to fix it.
This is the error that i'm talking about.
Reason Why This Happens
It's caused by Hamachi. You don't need to uninstall Hamachi like other people say you do to create a DD lobby, but it is a permanent fix (until you reinstall it).
Open up control panel.
Click Network and Internet.
Then click Network and Sharing Center.
Inside you should see your wifi, changing your network settings, etc. On the left click Change Adapter Settings.
You should see Hamachi, right click it and click disable. And you're done.
Hamachi will enable itself again eventually. So every time you want to open up a server disable Hamachi first.