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To install SourceMod on a Left 4 Dead 2 server, download the Linux builds of Metamod:Source and SourceMod (the stable SourceMod branch is 1.12), extract both on your PC and upload the addons and cfg folders into left4dead2/ with the File Manager or SFTP. Restart the server, then type meta list and sm version in the console to check that both load.

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Before you start

  • Make a backup in Backups first. See how to create and restore backups.
  • Download the Linux packages (.tar.gz). Our servers run Linux, so Windows builds don’t load.
  • SourceMod needs Metamod:Source. Install both.

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What are Metamod:Source and SourceMod?

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How to install SourceMod on Left 4 Dead 2

1

Download both packages

Download the latest stable Linux build of Metamod:Source and of SourceMod (1.12 at the time of writing).
2

Extract them on your PC

Extract both archives into the same folder. You get an addons folder (with metamod and sourcemod inside) and a cfg folder.
3

Stop the server

Stop the server in the panel.
4

Upload to left4dead2

In Files, open the left4dead2 folder and upload the addons and cfg folders there. For many files, SFTP is faster. Merge with the existing folders; don’t delete anything.
5

Start and check

Start the server. In the Console, type meta list. SourceMod should be listed as a running plugin. Then type sm version to see the SourceMod version.

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Where SourceMod files go

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How to add a plugin

  1. Upload the plugin’s .smx to addons/sourcemod/plugins/, plus any gamedata or extension files it comes with.
  2. Restart the server, or type sm plugins load <name> in the console.
  3. Type sm plugins list to check it is running.
Many L4D2 plugins need Left 4 DHooks, so install that next.

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Make yourself an admin

Add your SteamID to addons/sourcemod/configs/admins_simple.ini:
Then type sm_reloadadmins in the console. See SourceMod admin menu basics.

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Frequently asked questions

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meta list says “Unknown command”. What now?

Metamod:Source didn’t load. Check that addons/metamod sits in left4dead2/addons/, not in a nested addons/addons folder, and that you uploaded the Linux build.

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Do I need DHooks separately?

No. DHooks is built into SourceMod 1.11 and newer.

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Do SourceMod updates happen automatically?

No. Download the new build and upload it over the old files. Keep your configs folder.

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Can I install SourceMod with one click?

Not on Left 4 Dead 2. Upload the files as shown above.

Left 4 Dead 2 server guide

Every Left 4 Dead 2 page in one place.

Install Left 4 DHooks

The library most L4D2 plugins need.

SourceMod admin menu

Admins, flags and sm_admin.

Competitive configs (ZoneMod)

A full competitive package.

Connect via SFTP

Upload many files at once.
Tested by the FREAKHOSTING team on 30 October 2026 (Left 4 Dead 2 on our Game Panel). SourceMod details checked against the AlliedModders wiki on 30 October 2026.

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Need Extra Help?

If you encounter any issues, our support team is ready to assist:

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Last Updated: October 2026