Hi Amit,
I'm Christine, I can see here that you're unable to use your Dell D3100 docking station after upgrading to Windows 11. I'll do my best to help.
This can be a compatibility issue.
If you don't mind me asking, have you tried to reach Dell Support already regarding this?
After reinstalling the driver for Windows 11, have you tried to restart your computer already? If not yet, please try to restart first.
Please unplug from the power, wait at least 10 seconds, and then please reconnect the docking station.
If the issue persists, kindly check the troubleshooting steps from the link below:
https://www.dell.com/support/kbdoc/en-us/000132...
And if the issue persists, kindly check the Dell Support by choosing the Contact Support from the right side of the Dell website.
Thank you,
Christine L
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