Game storage outdated

What you see

• FiveM reports this exact message at startup or while joining
• It follows a GTA V or FiveM update

What usually causes it

• FiveM's stored copy of game data no longer matches the installed game
• GTA V updated while FiveM's cached data did not

Worth checking first

• Check whether GTA V has recently updated
• Check the FiveM cache size and free disk space

Safe steps, one at a time

• Let GTA V finish updating in its own store client, then launch it once
• Start FiveM again so it refreshes its stored game data
• If it persists, clear ONLY the FiveM server cache — you will re-download server assets on the next join
• Cfx.re documents this one directly; see Cfx support article 8016876906140 via the client-issues page

When to stop and ask staff

Not an AGN issue.