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Client & Server Launch Options for SCP: Secret Laboratory

Common Debugging steps

This page lists various launch options you can use when starting SCP: Secret Laboratory. These options can help improve performance, troubleshoot issues, or customize how the game runs. If you're using Steam, you can add them in the “Set Launch Options” sectio...

My game crashes on boot without giving any error: "kGfxThreadingModeSplitJobs"

Clients Crashes

Description of Issue If your Player.log only contains the line: kGfxThreadingModeSplitJobs is not supported on Direct3D 11. Reverting to kGfxThreadingModeClientWorkerJobs If the game closes right after this message in the logs appears, it usually means ther...

Getting kicked at round end straight to main menu - no disconnect message

Clients Misc

Description of Issue If your Player.log contains lines like: Playerlog.txt Server is performing a full round restart. Reconnection time: 25.Skipped Data message handling because connection is null.UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOptio...

My game keeps crashing when it reaches 90% while loading!

Clients Crashes

Description of Issue The issue usually happens when a user is joining a server or loading the game. The client will end up crashing when it reaches 90% in most cases. Resolution We have two solutions available that may be able to fix this issue: Disable ...

My game cant connect to central servers!

Clients Connection Issues

If you are located in certain countries, you may experience connection failures to the central servers when attempting to launch the game. This usually appears in two ways: You are blocked with an authentication pop-up on launch. The main menu fails...

Server Name and Info Customization Guide

Server Guides

Introduction By default, without any customization, the server name and description are plain white text with no formatting. However, good news is that they can be customized, thanks to the Unity Rich Text system. This document serves as a brief overview to t...

Authentication error: Could not resolve hostname/Stuck on Authenticating...

Clients Connection Issues

Issue Description This error occurs when your client (game) could not authenticate due it not being able to find the authentication servers via the assigned DNS server. Domain Name System servers are usually automatically assigned by your ISP (Internet Servi...

DNS And Network Report

Common Debugging steps Batch files

Network-report.bat GitHub repo: https://github.com/Kf637/DNS-And-Network-Report

Failed to download servers list. Invalid Signature

Clients Server List loading errors

Description of issue Error shown on the server list: “Server list has an invalid signature!”, not allowing the user to access the serverlist on that current instance of the game. Screenshoot Example Resolutions Restart the game.  Restart you...

SteamCMD: App '996560' state is 0x6 after update job

Server Issues Misc

Description of issue While updating the dedicated server with SteamCMD, the process exits with: Error! App '996560' state is 0x6 after update job This prevents the update from completing. Quick fix Delete the stuck appmanifest and rerun the update. Path:...

How to Install or Repair DirectX

Common Debugging steps

This page explains how to install or repair the DirectX End-User Runtimes (June 2010) package. Download the Installer https://www.microsoft.com/en-gb/download/details.aspx?id=8109 Run the Installer Double-click the downloaded file named directx...

How to Install or Repair .NET Framework 4.8 Runtime

Common Debugging steps

This page explains how to install or repair the .NET Framework 4.8 Runtime on your system. Download the .NET Framework 4.8 Runtime Installer from Microsoft https://dotnet.microsoft.com/en-us/download/dotnet-framework/net48 Uninstall any existing ....

Game stuck on running install script on Steam

Clients Misc

Description of issue Game is stuck on "running install script" on Steam, not allowing you to play the game. Causes: Steam permission issues. Steam unable to run install script automatically. Solutions: Run Steam as admin. Open steam and naviga...

DllNotFoundException on server startup (GpuDriver.dll / libopus-0)

Server Issues Misc

Description of issue When you start the server, it shows a big red error message in the console and stops.The error says:DllNotFoundException: GpuDriver.dll or DllNotFoundException: libopus-0.This happens when some needed files (dependencies) are missing. So...

Authentication error - Winsock error: 10054

Clients Connection Issues

Description of issue Some players cannot connect to the game due to government internet restrictions in their country.When this happens, the client cannot reach the authentication servers. Solution Try the launch code (Steam) Open your Steam Library....

Setup and use SRV records for SCP:SL servers

Server Guides

A SRV Record is a type of DNS record that specifies the location of a specific service, location being it's IP and Port. With Secret Laboratory version 13.2, support for SRV records have been added. It allows your players to connect via DNS addresses such as ...

Running "!verify" in LocalAdmin doesn't work!

Server Issues Verification issues

Description of Issue Running !verify in LocalAdmin doesn't output anything into the console. How do I resolve this? This may be due to one or more of these issues: contact_email is not properly set in your gameplay config (config_gameplay.txt) serverinf...

SteamCMD: Error! App state is 0x2 after update job

Server Issues Misc

Description of issue: When trying to install or update the dedicated server via SteamCMD, it will result in the following to be displayed: Error! App ‘996560’ state is 0x2 after update job. Causes: There is no official documentation about this error, but w...

SteamCMD "Fatal Error: Failed to load steamconsole.dll"

Server Issues Misc

Description of issue: When trying to install or update the dedicated server via SteamCMD, it will result in the following to be displayed: !!! Fatal Error: Failed to load steamconsole.dll Solutions: Run SteamCMD as Admin. Move SteamCMD install or game...

My server is receiving a large amount of "Incoming Connection" logs!

Server Issues Network issues

Description of Issue If your LocalAdmin console is littered with incoming connection logs as shown in the image below, you may be a victim of Preauth Spam attack. Explanation This type of attack utilizes spoofed (illegitimate) IP addresses due to the way th...