AGN Troubleshooter
FiveM · GTA V support

← Error library

medium likely Windows · AGN-KB-WIN-0006

Unsupported or out-of-date Windows build

This one is not certain. It is marked likely: the guidance is safe and reasonable, but the diagnosis is not proven for every case. If it does not match what you are seeing, stop and ask rather than pushing on.

FiveM and GTA V both require a reasonably current Windows. Very old builds stop being supported.

What you see

  • FiveM refuses to start or warns at startup
  • The PC is running an old Windows 10 feature update or an unsupported build

What usually causes it

  • Windows has not had feature updates for a long time
  • Windows Update is broken or paused

Worth checking first

  • Record the Windows edition, version and build number (the Support Assistant reports these)
  • Check whether Windows Update is paused or failing

Safe steps, one at a time

  • Install outstanding Windows updates and restart
  • If Windows Update itself fails, resolve that first — it is a Windows problem with its own troubleshooter
  • Back up anything important before a feature update, as with any large change

These are suggestions, not instructions. Do only what you are comfortable with, back up anything important first, and stop if a step does not match what is on your screen. Advice, risk and responsibility.

When to stop and ask staff

Never an AGN issue.

Looks like

Player computer

What staff will need

  • Windows edition, version, build

Applies to

Independent of AGN version.

Last reviewed Fri Sep 18.

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