Hi all - we're aware of an issue with anticheat making the client unable to launch and one workaround is to verify your files: (
known issues thread)
[PC] Easy AntiCheat – Impossible to launch the game
Easy AntiCheat sometimes displays an error message. Afterwards the game doesn´t launch at all or just closes after the intro videos.
Workaround: Use the "Verify File Integrity" option in Uplay PC client. Open your For Honor - Closed Beta game page, click "Properties", and in the "Local files" section select "Verify files".
If that doesn't help, please submit a ticket to
support and they can help you look into it further. Thanks!