
Hi @Andi
I can reproduce the issue with Edge version 96.0.1054.29. After investigating, I find that Edge WebDriver can be started normally under LocalSystem account, it's Edge browser which can't be started under LocalSystem account.
I think that's an issue with Edge version 96.0.1054.29. I suggest that you can provide feedback about this issue to Edge team by pressing Alt+Shift+I in Edge. The Edge team will check the feedback and improve the products continuously. Thanks for your understanding.
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Regards,
Yu Zhou