When you join a tModLoader server, the game must ensure your local mods exactly match those of the host. Mod Syncing
The client checks which mods the server is running.
If you are still experiencing issues, I can help you dig deeper. Please let me know: Are you using or Direct IP ? How many total mods is the server running? reload complete joining tmodloader
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Ask the server host to export their mod list. They can do this by going to and sharing the enabled.json file, or by creating a Steam Workshop Collection. When you join a tModLoader server, the game
: Try using Join via IP directly instead of the Steam Friends list. Immediate Troubleshooting Steps
Large modpacks (like Calamity, Thorium, and Fargo's Soul Mod combined) require massive amounts of memory. If your game crashes right as it says "Joining," your system likely ran out of RAM. Please let me know: Are you using or Direct IP
Configuration options (Fisherman NPC) - Official Terraria Mods Wiki
Reload Complete Joining tModLoader: Troubleshooting Guide (2026)
If you are hosting or have access to the server files, open the serverconfig.txt file. Look for network timeout thresholds and increase them, or ensure the server has high priority in Windows Task Manager.