
ServerAuthFix
Prevents the Server Manager from resetting valid logins
Description
ServerAuthFix
This mod is a client-side workaround for the very annoying bug that forces you to frequently re-enter dedicated server passwords. Once installed, the in-game Server Manager will keep you logged in just like it used to in 1.1. The servers do not have to be modded for this to work.
Relevant QA Posts
https://questions.satisfactorygame.com/post/6a2a5b6dbd223e5094c3d8cf
https://questions.satisfactorygame.com/post/6a21860cb4a0d61847277a37
* and many more
Support
If you have any issues with the mod or suggestions for improvement feel free to submit a [GitHub Issue](https://github.com/TrollyLoki/ServerAuthFix/issues).
You can also reach out to me on the modding Discord as TrollyLoki.
Technical Details
Although this might seem like a client-side issue, the actual root cause is server-side. In 1.1, authentication tokens were verified by making a parameterless request to the server as an authenticated client. As of 1.2, the token is now passed as a parameter within an unauthenticated request. The problem is that the server still requires existing authentication to make this request (because in `FGServerAuthenticationController.h` the privilege level is set to "Client") while the client no longer provides it (because in `FGClientAuthenticationRequester.h` the privilege level is set to "NotAuthenticated"). This causes all token verification attempts by the client to fail regardless of the actual validity of the token, which is why it makes you re-enter the password.
This mod suppresses the meaningless verification errors and instead clears the saved authentication token only if an actual request fails with an invalid token error.
How to Install ServerAuthFix on Your Server
Order Satisfactory Server
Order a Satisfactory server with at least 4 GB RAM (6 GB recommended). For multiplayer: per 4 players.
Install Mod
Open the mod manager in the dashboard and search for "ServerAuthFix". Installation dependencies are installed automatically.
Restart Server
Restart the server so the mod is loaded. Players need to have the mod installed locally as well.
Frequently Asked Questions
ServerAuthFix not working after update β what to do?
After a Satisfactory update, mods need to be updated. Check ficsit.app whether ServerAuthFix has been updated for the new game version. With Mado Hosting: open the mod manager and click "Update All". If the mod hasn't been updated yet, temporarily remove it so the server starts.
ServerAuthFix causing crashes in multiplayer β solution
Most common cause: all players must have exactly the same mod version installed. Check server logs for "ModMismatch" or "Version Conflict". Ensure all players use ServerAuthFix v1.0.0 and the same SML. With Mado Hosting, Satisfactory servers run with 6 GB RAM for stable multiplayer performance.
Is ServerAuthFix compatible with other Satisfactory mods?
ServerAuthFix uses the Satisfactory Mod Loader (SML). Generally, SML-based mods are cross-compatible, but mods modifying the same game systems can cause conflicts. Test new mod combinations on a backup save. The Mado dashboard automatically detects known conflicts and warns you.
Rent ServerAuthFix Server
Play ServerAuthFix on your own Satisfactory server with mod support.
Mod Information
- Author
- TrollyLoki
- Latest Version
- v1.0.0
- Created
- June 25, 2026
- Last Updated
- July 8, 2026
- Source Code
- GitHub β