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Please try the following:
Uninstall the LAN driver you have installed from device manager and then install the Realtek* LAN Driver for Windows 10* for Intel® NUC.
Try updating Windows to all the available updates.
It could be the power settings for the network adapter. Windows 10 is notorious for shutting devices down when it shouldn't. Try this:
- Open your Network Connections
- Select "change adapter settings"
- Open the properties for your wired connection.
- Select Configure.
- Go to Power Management and uncheck "allow the computer to turn off this device to save power"
Unfortunately i tried that without any results. I also tried various drivers (official also).
Anyway, when I run windows network diagnostic "default gateway is not available" is displayed.
Have you checked if you have any firewall that is preventing the network to work properly?
Did it work fine before or you have this issue since you purchased the unit? If not, I suggest restoring the computer to a previous state by System Restore when it was giving a trouble-free connection to the Net.
I’m just following on this thread to ask you if your issue was resolved with the information provided above or if you solved the problem.
I'm glad that you issue has been resolved and thank you very much for taken your time to share with us how you were able to solve it.
Your solution "I tried every solution listed in this topic but nothing worked. So I wiped my ssd and installed win10 again. Ethernet is stable now."