MT5 · Runtime errors
MT5 5271 · Too many open sockets (max 128) | YI GOLD
ERR_NETSOCKET_TOO_MANY_OPENED
Official meaning
Too many open sockets (max 128)
Possible causes · YI GOLD suggestions
Determine the cause from the official meaning, the triggering function and terminal logs.
Troubleshooting · YI GOLD suggestions
Inspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description.