In some cases security software (Antivirus, Firewall, Anti-malware) may be blocking a connection to our servers. For more details please visit our Disabling Security Software guide found Here.
Most internet connection methods/devices can restrict port access. Making certain alterations/changes will allow Dungeon Defenders II to successfully send data to our servers. In your router/modem settings enter the ports you will need to forward for Dungeon Defenders II to run:
For step by step manuals please refer to the useful third-party sites like:
Please be careful when unlocking ports, and pay attention which ports are being unlocked because, unlocking too many may potentially increase the chance of your PC being infected with malicious software.