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

Try Refreshing Authentication

  • Open the player console by pressing ~

  • Type ar and press Enter

If this does not resolve the issue, proceed with the following launch options.

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

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