Article Number: 000134656
Thunderbolt Docking Stations Not Initializing at the Login Screen When on a Domain
Summary: This article gives information about the Dell Thunderbolt Docking Stations not initializing at the login screen when used on a Domain.
Article Content
Symptoms
Peripherals like a keyboard and mouse connected using USB to a Thunderbolt Dock may work in BIOS, do not work at the login screen, but work after login.
Affected Platforms:
- Dell Thunderbolt Dock TB15
- Dell Thunderbolt Dock TB16
- Dell Precision Dual USB-C Thunderbolt Dock - TB18DC
- Dell Thunderbolt Dock - WD19TB
- Dell Thunderbolt Dock - WD19TBS
Cause
Thunderbolt interface architecture up to Thunderbolt 3.
Resolution
Kernel Direct Memory Access (DMA) Protection
The new Kernel DMA Protection that is active in Windows does not let Thunderbolt docking stations initialize before booting into the Operating System (OS). This is working as designed.
Companies or individuals using a Domain login to push group policies may see this issue. This is due to group policies not being pushed to the computer before the user logs in.
Group Policy Change
To fix this behavior, the group policy must be changed to allow the docking station to initialize at the login screen.
Additional Information:
An example of the settings in Intune (Figure 1):
Figure 1
Article Properties
Affected Product
Dell Thunderbolt Dock TB15, Dell Thunderbolt Dock TB16, Dell Precision Dual USB-C Thunderbolt Dock - TB18DC, Dell Thunderbolt Dock - WD19TB, Dell Thunderbolt Dock – WD19TBS
Last Published Date
27 Mar 2024
Version
5
Article Type
Solution