KF2 Custom Map Download Error: Raise MaxDownloadSize

Some Killing Floor 2 servers with custom maps would not let new players in and showed a Connection Error. A Korean community member traced it to the server's per-file download cap: the host server limits how much data it will send to a joining client, and custom maps are bigger than the default.

Symptoms

• Players cannot connect to a custom-map server, or their download never finishes.
• When you host your own server with custom maps, other people cannot join for the same reason.

Fix

1. Open the server config file kf2server\KFGame\Config\PCServer-KFEngine.ini in Notepad.
2. Press Ctrl+F and search for MaxDownloadSize.
3. The default value is 1024000, which equals about 1 MB.
4. Change it to a larger number. The author suggests 102400000.
5. Save the file and restart the server.

Tips

• The limit applies to each downloaded file, so choose a value above the size of your biggest map.
• If you run many maps or large mods, consider hosting them on a web redirect instead. See custom maps with an nginx redirect for the approach, and server setup with custom maps and mods.