There are many reasons for this problem; one of the reasons is that Windows Update failed to install or update the Network drivers, in that case, you have to update the required driver manually.

Installs base drivers, Intel PROSet for Windows Device Manager, advanced networking services for teaming and VLANs (ANS), and SNMP for Intel Network Adapters for Windows 7/8/10/11. Download the ...

It is probably the most efficient way to update network drivers in Windows 11. Whether it is a Wi-Fi driver or Ethernet driver, you can use the Windows Update to download and install the pending ...