OneSync not enabled – what to do?

In server.cfg: onesync on (or onesync_enableInfinity true for Infinity). Use latest FXServer artifacts. Full server restart.

Players invisible / can't see each other?

Enable OneSync, match sv_maxclients to population, update artifacts. For ESX/QBCore: check framework version.

OneSync Infinity vs legacy?

Infinity (onesync_enableInfinity true) for large servers (64+ players). Legacy onesync on is enough for small servers. Don't mix both.

FiveM OneSync Error – Fix Population, Infinity & server.cfg

Quick answer: Fix FiveM OneSync errors with onesync on or onesync_enableInfinity true in server.cfg, correct population and current artifacts.

If you landed here: Console shows "OneSync not enabled", players invisible, population limit not working or Infinity fails.

Error → fix

Symptom / log	Fix
OneSync not enabled	`onesync on` in server.cfg, full restart
Population not working	txAdmin → Settings → enable OneSync Population
Infinity unavailable	`onesync_enableInfinity true` + latest artifacts
Players invisible	Enable OneSync, update framework, clear cache

Configure OneSync
FiveM server lagging
FiveM won't start

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FiveM OneSync Error – Fix Population, Infinity & server.cfg

Error → fix

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