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The most resource-intensive but reliable method is to use a dedicated Steam account for your Headless Client.
If you have tried everything and the error remains "hot," run your Headless Client without a Steam login. This requires a specific launch sequence.
In your server.cfg , update the following arrays with your HC's IP address. If the HC is on the same machine as the server, use 127.0.0.1 :
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: Add battleyeLicense = 1; to the profile file being used by your Headless Client.
Ensure the "Steam Service" is running in your Windows Services menu. Step 5: IP Binding Issues
When you see the message "Steam Authentication Failed," the sequence is happening as follows: The most resource-intensive but reliable method is to
If your HC and server have even one mismatched mod—or if the HC is missing a .bikey file that the server requires—Steam authentication can fail.
: The Headless Client, when launched, will try to authenticate itself like a normal player. However, the standard Steam validation process for a server can fail, particularly if the server itself is not properly initialized with Steam services. This issue is especially prevalent when attempting to use an x64 server executable.
Follow these verified diagnostic steps to resolve the issue and ensure your HC connects seamlessly. 1. Correctly Whitelist the IP in server.cfg In your server
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: Authentication issues often occur when trying to connect an HC to a "Live Hosted" (non-dedicated) server. Using a Dedicated Server setup is highly recommended for HC stability. Troubleshooting Steps