OK, so I'm completely stumped here. I need help.
I have around 140 users on my Meraki MX64 with a 100Mbps up/down fibre network connection. Only one of my users has this problem.
This user has a Dell XPS 13 9310 laptop with Windows 11 installed. They use a J-Create JCD542 docking station's RJ-45 port to connect to the network.
Problem: The user has intermittent internet. However the local network is not intermittent.
To clarify, if I ping my local NAS drive (that is connected on the same switch as my Meraki MX64) then there is no packet loss. If I ping 8.8.8.8, then I have packet loss. If I connect another laptop on the same lan cable, the packet loss to 8.8.8.8 goes away. If I move the XPS laptop to a different lan connection, I still get packet loss to 8.8.8.8. Also if I connect the XPS to a D-Link router with 4G mobile internet via the same docking station, then the packet loss to 8.8.8.8 goes away. I have also tried a two other docking stations with the XPS and the packet loss still occurs when connected via the Meraki.
So the problem is not (as far as I can tell):
a) The network or the local lan cable, that works perfectly if another laptop is connected. Also the problem persists if the XPS user connects to the network at a different location.
b) The docking station, we have tried 3 different docking stations. Also the docking station is not intermittent when on a 4G router.
What I have done to try to fix the problem:
1) I have moved the user to a group policy with no restrictions.
2) I have changed the IP assignment of the user.
3) I have uninstalled the network driver in device manager and rebooted the laptop.
4) I have tried the Windows 11 internet connection troubleshooter, that found no problem.
5) I have tried these commands:
netsh winsock reset
netsh int ip reset
ipconfig /release
ipconipconfig /flushdnsfig /renew
6) In windows 11 I did: Settings > Network & internet > Advanced network settings > Network reset
Nothing works, the internet connection remains intermittent for this one user on this one laptop and nowhere else. I add a screenshot of how we ping a local NAS with no packet loss and 8.8.8.8 with packet loss at the same time.
