@K-R_-Trust-Net
When using/enabling FDE the is a FDE Preboot that is enabled for logging into the machine securely. There is no network connectivity when at preboot. The FDE Preboot login is meant for a user to be directly at the machine and not accessing the machine remotely.
If you are trying to access machine remotely that have our FDE solution on them and Preboot is enabled, the user(s) would first need to login through preboot in order for you to remote into the machine/Windows. This is expected behavior and how the product is designed.
If you do not want to use preboot it can be disabled. However, this is not recommended as this would decrease the level of security being offered by FDE.
Justin Cortez
Technology Leader | Endpoint Cyber Security Products | Americas Endpoint Team