Ethernet dropping on Windows 10 boot camp, Big Sur latest version on my Mac Pro 2019.

DragonAngel1st wrote:

I tried all those answers but my problem persist. Also none of them mentioned that they have to reset the network adapters (ethernet) each time they restart windows.

This may be related to how you switch from macOS to Windows. Instead of a 'warm' start, can you test a 'cold' start of Windows?

The version I found that works best but not perfect is 2.1.21.

The 2.1.18 version works properly on some releases of EFI. Unless you want to debug packet level traces, what happens if you force the card into 1Gbps instead of 10Gbps? If the rest of your wired network does not support 10Gbps, you will see many packet unnecessary packet retransmissions. You may be able to see these in a Wireshark trace.

Also most of the questions/answers date all the way back to 9 years or so, I would thought by now there would be something more concrete as a solution. There are many 2019 Mac Pro users and I’m sure a-lot of them use boot camp, yet there is little discussion on this.

There are many environmental dependencies for a 10G copper network to work properly. Try the 1Gbps

There are some driver versions that do not work properly.

See

• Mac Pro 7,1 Fails Ookla Upload Test using… - Apple Community
• iMac Pro networking stuttering and slow - Apple Community
• https://forums.macrumors.com/threads/aquantia-aqtion-10gbit-network-adapter-windows-10-issues.2233036/

for reference.

Check the DHCP logs on the DHCP server of the network you are connected to. It should provide all these parameters, including the gateway. If ARP is failing on your network, discovering the gateway would be problematic. You can also test with a static IP for your Windows side.