warningCrash ReportsAffects: All versions
How to Fix Networking Buffer Overflow Crash
Fix Networking Buffer Overflow by reducing view distance and updating mods with oversized packets.
Quick Fix
Reduce the view distance. If a mod causes it, report the bug to the mod developer.
Error Message
io.netty.handler.codec.EncoderException: Buffer overflow / Packet size exceededHow to Fix
1
Reduce server view-distance to 8
2
Reduce the number of entities in dense areas
3
Update the mod identified in the error
4
Set network-compression-threshold to 256 in server.properties
Common Causes
- Mod sending oversized network packets
- Too many entities or block entities in view range
- Custom mod networking not respecting packet size limits
Diagnostic Steps
- Lower view distance
- Clear entity-dense areas
- Update mods
- Restart
FAQ
What is network compression threshold?
The minimum packet size before compression is applied. Lower values compress more packets, reducing bandwidth at the cost of CPU.