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I keep getting kicked with the error “Client failed to authenticate in time”!

Description of issue

This issue is typically caused by a user’s authentication token being rejected or reassigned constantly by our central servers.

Ensure your PC meets our minimum system requirements. Your PC specs should match or be more powerful than the current minimum system requirements on our Steam page. Anything less powerful risks having issues occur simply due to your hardware not being able to handle running SCP:SL. Additionally, please ensure you are on an up-to-date version of Windows 10/11. Other operating systems are not supported at this time.

Resolution

Take a look at our generic network issues guide.

Adjust Launch Options in Steam

  1. Add -httpproxy

    • Open Steam Library

    • Right-click on SCP: Secret Laboratory

    • Select Properties → Launch Options

    • Add -httpproxy and try launching the game

  2. If the issue persists, remove -httpproxy and try -unitywebrequest

    • Delete -httpproxy from launch options

    • Add -unitywebrequest and test again

  3. If the problem still exists, remove -unitywebrequest and try -unitywebrequestdispatcher

    • Be aware that this may slow down the server list loading time

Still have issues?
Please contact our Technical Support team here
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