Hi Karel,
I have reviewed the issue, and from my understanding If your Windows 11 PC can't connect to the ethernet after an update, it could be due to various reasons like driver incompatibility, network settings being changed, or issues with the update itself. Here’s how you can troubleshoot and potentially resolve the issue:
Step 1: Check Physical Connection
• Ensure the Ethernet Cable is Properly Connected: Make sure the ethernet cable is securely plugged into both your PC and the router/switch.
• Test with a Different Cable or Port: Try connecting with a different ethernet cable or port on your router/switch to rule out hardware issues.
Step 2: Verify Network Adapter Status
- Open Device Manager:
o Press Win + X and select Device Manager.
- Check for Network Adapters:
o Expand the Network adapters section.
o Look for your Ethernet adapter (e.g., "Realtek PCIe GbE Family Controller").
- Check for Driver Issues:
o If there’s a yellow warning triangle or red cross next to the adapter, it indicates an issue.
o Right-click on the adapter and select Properties to check the status.
Step 3: Update or Rollback Network Drivers
- Update Driver:
o Right-click on your Ethernet adapter in Device Manager.
o Select Update driver > Search automatically for drivers.
o Restart your PC after the update and check the connection.
- Rollback Driver:
o If the problem started after a driver update, right-click on the Ethernet adapter.
o Select Properties > Driver tab > Roll Back Driver.
o Restart your PC and see if the issue is resolved.
Step 4: Reset the Network Configuration
- Open Command Prompt as Administrator:
o Search for "cmd" in the Start menu, right-click, and select Run as administrator.
- Execute Network Reset Commands:
o Run the following commands one by one:
netsh winsock reset
netsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns
o Restart your PC and check the connection.
Step 5: Uninstall Recent Windows Update
If the issue started after a recent update, it might be worth uninstalling that update:
- Go to Settings:
o Press Win + I to open Settings.
- Navigate to Update & Security > Windows Update.
- Click on View update history > Uninstall updates.
- Select the recent update that was installed before the issue started and uninstall it.
Step 6: Perform a Network Reset
- Go to Settings:
o Press Win + I to open Settings.
- Navigate to Network & Internet.
- Scroll down and click on Advanced network settings.
- Click Network reset.
- Follow the prompts and restart your PC.
Step 7: Reinstall the Network Adapter
- Open Device Manager:
o Press Win + X and select Device Manager.
- Right-click on the Ethernet adapter and select Uninstall device.
- Restart your PC. Windows should automatically reinstall the adapter driver.
- Check the connection status after restarting.
Please let me know if you need further assistance, and keep me updated.
Best regards,
Arvind