Garry's Mod Server Won't Start – Lua, Workshop & srcds

Quick answer: GMod won't start: read console log, check workshop addons, map exists and increase RAM (8 GB+ with many addons).

If you landed here: srcds crashes on start, Lua errors in console or restart loop in panel.

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Frequently asked questions (FAQ)

GMod server won't start – first steps?

Read console log. Common: missing workshop collection, Lua error in addon, wrong map, low RAM (min 4–8 GB depending on addons).

Lua error on startup?

Remove last installed addon. Update Garry's Mod + server. Check workshop collection ID in server.cfg.

Which ports for GMod?

27015 UDP/TCP (game) + 27005 UDP (client). Source engine – open both protocols.

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