Hi there,

We have recently installed a SD25TB4 dock for a Dell Pro 16 Plus laptop and we are facing a strange behavior.

Windows boots endlessly with docking connected

If we try to start the Windows OS with the docking station connected on a USB-C port, the POST goes fine but then the boot process is not moving forward. The "loading wheel" of Windows is turning endlessly and we never get to the login screen.
If we try to start the Windows OS without the docking station connected on a USB-C port, the Windows system is loading successfully.
If we remove the USB-C cable of the docking while the "loading wheel" of Windows is turning "endlessly", then the loading process continues straight away and we get to the login screen.
No BSOD have been observed or any crashes
Booting issue occurs everytime from cold boot with the USB-C cable connected to the USB-C port
The docking struggles randomly to detect external screen connected to the DP port (sometimes it detects, sometimes not)

Firmware

2.4.2 (last to date)

Thank you for your suggestions on this case folks.

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Dell Pro Laptop Computers