Windows 11 & issues with network connection on a dock

I am having this exact issue with only 1 machine and have 22 exact setups some running Win 11 and some still on Win 10. I was able to resolve for a short time by uninstalling USB Ethernet and deleting driver and re-scanning and letting Windows reinstall. No reboot and it started working for a few hours then switched back to wifi when it failed and now will not connect after disable re-enable. I have deleted this time as I want to find a real fix. I replaced the Dock with a spare and had the same issue. Disconnecting Dock and reconnecting from machine didn't resolve. 

I discovered this after a bit of digging. I was running the latest version of Driver for the USB G Ethernet however I ran the driver updater. Realtek-USB-GBE-Ethernet-Controller-Driver_3K7FF_WIN_1153.6.0418.2022_A27_01

During the install process I noticed that on the removal of the previous driver that it connected to my network then as it began installing drivers it went right back to no connection. After it completed it was not connected as it was before. I then went to the driver and rolled it back to previous and it immediately connected. So the latest driver breaks the Dock's Ethernet. 

Did you try

Network adapters -> Realtek USB gbit ethernet controller -> Properties -> "Configure" -> "Advanced" -> Idle Power Saving > Disable.

?

Figures...takes months for them to figure this stuff out.  Appreciate the reply!

Hello together, 

Today i had contact with the Dell Support. 

They told me all XX20 Systems have the same issue with windows 11.  Dell knows it is a USB GBE Driver issue.

"Intel is already working on a version of the USB GBE driver optimized for Windows 11. However, a definitive release date for this has not yet been set."

Hello, 

Thanks for the response, yes, I've seen it both ways where one tells you turn off the Power Saving functions and one that tells you to turn it on.  Doesn't seem to help either way.

I had the same issue and this fixes it. Thanks

Yup I'm having the same issues, reverting back to Windows 10.

We are having the same issue with 5420s and 5430s on Windows 11 with both the WD19s dock or Dell Monitors with Ethernet. Both use the Realtek USB GBE Ethernet Controller. We have tried all Dell drivers, BIOS and dock firmware updates that are available.

The problem does not happen all the time or even every day but effected users do see it all around the same time. Seems odd and also makes it hard to trouble shoot. We have also found unplugging and using just WiFi or using the laptops onboard Intel ethernet works without issue.

I did find that Realtek has a newer driver(1153.8.x) that DELL has yet to publish:

https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-usb-3-0-software

I couldn't find release notes but from what we saw after installing it on two computers it turns energy efficient ethernet and green ethernet to disabled. The driver on Dell support (1153.6.x) has those both enabled. You can find those setting on the advanced tab in the driver properties. I am not sure if this muddies the waters more or not.

I contacted our Dell reps yesterday asking if they can connect me with an engineer or someone that can speak to when that drive might be available from DELL and if they know about the issue. After relaying the info to a "Client Technologist" they told me calling the 1-800 number and putting in a support ticket would be best way to start.

UPDATE: I guess the new driver from Realtek is not the fix. Three clients including myself are seeing it happen as I type this. It is odd that it happens at the same time for multiple users then is fine before and after.

Bummer.  That would have been good for something to fix this. It's been going on for months.

Bios of the Dock or the laptop - what bios version?

Seems the last BIOS update fix the problem

Hi i see the same problem nic on docs not working with or wo flow control