SyncCrate
Call of Duty 4: Modern Warfare guide · Updated
Same CoD4 mods and maps before the first round.
Custom maps and mods for Call of Duty 4 on every PC at the LAN party. SyncCrate copies the host's Mods and usermaps folders to the room at LAN speed, and after the first time only what changed.
FreeOpen sourceNo cloudWin · macOS · Linux
// 01 Why
Why CoD4 LAN nights start with downloads
A Call of Duty 4 server can let players download its mod and map files, but in-game downloads are slow, and with a room full of players connecting at once, the first round waits for the last download.
Custom maps and mods also have to match exactly. A player with a different version of a map's files can't join, or gets kicked with a file mismatch.
With SyncCrate one PC hosts and the others match it. Files are compared by content, only the differences are copied, and everyone sees the list before anything changes.
// 02 What syncs
What SyncCrate syncs for Call of Duty 4: Modern Warfare
| Folder | Path in the game folder | Files |
|---|---|---|
| Mods | Mods/Mod folders in Mods, with their .ff and .iwd files. | .iwd .ff |
| Custom Maps | usermaps/Custom maps in usermaps, one folder per map. | All files |
// Where it looks
- Steam
steamapps/common/Call of Duty 4in every Steam library, on every drive- Windows
C:\Program Files (x86)\Activision\Call of Duty 4 - Modern Warfare- Anywhere else
- Point SyncCrate at the folder yourself, once
Built in for Call of Duty 4: Modern Warfare
- Turn mods on and off. Disabled mods move to a
_Disabledfolder the game doesn't load. - Game-running warning. SyncCrate warns you before syncing while Call of Duty 4: Modern Warfare is still open.
- Undo and history. Undo the last sync in one click, and put back any single file a sync replaced or deleted.
// 03 How it works
Sync Call of Duty 4: Modern Warfare in three steps
Install and add the game
Install SyncCrate on every PC and add Call of Duty 4: Modern Warfare in the Game Browser. Its folder is found automatically.
One PC hosts
The PC with the setup everyone should have clicks Start Hosting. The others pick it under Scan for Hosts on the same network, or paste its join code from anywhere.
Compare and sync
Check the list of new, changed and conflicting files, then Sync Now. Only the files that differ are copied, PC to PC.
TipEveryone needs the same game version. Start the mod from the game's Mods menu, the same one the server runs.
// 04 Common problems
When Call of Duty 4: Modern Warfare mods don't match
Slow in-game downloads
Server downloads trickle to each player while they wait, and the whole room waits with them.
Sync mods and maps to every PC before the first round, at LAN speed.
File mismatch on join
A different version of a map or mod file on one PC is enough to be refused by the server.
Everyone gets the host's exact files, compared by hash.
No internet at the LAN party
Map packs and mods have to come from somewhere, and at a LAN party that's rarely a fast connection.
SyncCrate finds the host on the local network and needs no internet at all.
// 05 Call of Duty 4: Modern Warfare
Good to know
- Only mods and custom maps sync. Your config, profiles and the game's own files stay as they are.
- Dedicated server? The server needs the same files. If it runs on a PC with SyncCrate, point SyncCrate at the server's folder and sync it too.
// FAQ
Call of Duty 4: Modern Warfare questions
Where do Call of Duty 4 custom maps go?
In the usermaps folder inside the game folder, one folder per map. Mods go in Mods, one folder per mod.
Do all players need the custom maps?
Yes. Players need the map's files to load it, either by downloading them from the server or by having them already. Syncing before the LAN is the fast way.
Does it work without internet?
Yes. On a local network SyncCrate finds hosts by itself and copies files PC to PC.
// Related game guides
All games · SyncCrate supports 100 games.
// Free · Open source · Windows, macOS, Linux
Same Call of Duty 4: Modern Warfare setup on every PC.
Install SyncCrate on each PC, one of you hosts, everyone else joins. No accounts, no cloud, nothing uploaded anywhere.