Title: IW5 Dedicated Server – Authentication Error 401 (Online and LAN)
-
Hi,
I'm trying to set up a Plutonium IW5 (Modern Warfare 3) dedicated server on Windows 11 to play Bot Warfare locally, ideally with persistent XP, weapon levels and unlocks.
Every time I launch the dedicated server, I receive this error almost immediately:
Could not authenticate to Plutonium: non-success status code: 401
My setup:
Plutonium Core: r5369
Launcher: 3.0.0
Server directory: E:\gameserver\IW5
Server port: 27017
Server configuration: admin/server.cfg
Normal Plutonium IW5 multiplayer works and I'm signed into my account.
Troubleshooting already completed:
Generated a new server key registered for iw5mp.
Confirmed the key matches the one in my batch file.
Confirmed the MW3 game files and executable are present.
Checked Windows Firewall.
Tested with TotalAV WebShield temporarily disabled.
Tried launching with -dedicated -lan, both without a key and with +set key "Notneeded".
Confirmed the dedicated server and normal Plutonium client both use Core r5369.
All configurations produce the same 401 error.
My current LAN launch command is:
bin\plutonium-bootstrapper-win32.exe iw5mp "%gamepath%" -dedicated -lan +set key "Notneeded" +set fs_game %mod% +set sv_config %cfg% +net_port %port% +start_map_rotate
Is there a known authentication issue with IW5 dedicated servers on r5369, or something incorrect in my setup?
I'd also appreciate clarification on whether a LAN dedicated server can save player XP and unlock progression between sessions.
Thanks!
-
You probably did something wrong and over complicate it
Here's the full instructions on what I've done to get it to work:- I installed the game normally
- Dropped the server files in it
- Changed the port to 27017 in bat file
- Started my game
- Started the server
- Open the game's console and paste
connect localhost:27017
You don't need a server key to play locally
401 error in the console while the server is running is normal for a local server with no port opened and no server
My server is displaying that and I can play and progress just fine -
You probably did something wrong and over complicate it
Here's the full instructions on what I've done to get it to work:- I installed the game normally
- Dropped the server files in it
- Changed the port to 27017 in bat file
- Started my game
- Started the server
- Open the game's console and paste
connect localhost:27017
You don't need a server key to play locally
401 error in the console while the server is running is normal for a local server with no port opened and no server
My server is displaying that and I can play and progress just fine
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better 💗
Register Login