MB SD Connect C4 Xentry 2021.3 Unknown Lan ID Solution

When activating mb sdconnect C4 Xentry 2021.3, it shows ” Unknown Lan ID”, obdii365.com engineer offer the working solution.

Xentry 2021 3 Unknown Lan Id

Image 1: Xentry 2021.3 Unknown Lan ID



  1. Start -> Execute -> cmd
  2. Enter: set devmgr_show_nonpresent_devices=12

Enter: set devmgr_show_nonpresent_devices=1

  1. Enter: start devmgmt.msc
  2. Click on [View] and select “Show hidden devices”
  3. Network adapters
  4. Reboot computer

Do not delete “RAS Async Adapter”, just delete the other gray options.


Alright, Xentry 2021.3 is working now with mb sdconnect C4.