Error code
Minecraft Internal Exception: java.io.IOException: An existing connection was forcibly closed by the remote host
MINECRAFTInternal Exception: java.io.IOException: An existing connection was forcibly closed by the remote host
Game/Platform Error· An error code shown by a game or gaming platform/launcher.
What it means
The remote server forcibly terminated your active connection.
How to fix it
- Restart your modem and router.
- allow Minecraft through Windows Firewall for private and public.
- update your network and graphics drivers.
- flush your DNS cache.
- test on vanilla Minecraft without mods.
- reinstall Java and Minecraft.
Not affiliated with Minecraft. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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