Dell Latitude 7400 – WiFi Disconnects 1–2 Times Daily (Windows 11) – Need Permanent Solution.

Hello,

I am using a Dell Latitude 7400 (Windows 11) and I have been facing a very annoying WiFi issue for the past few days.

Problems:

• WiFi connects normally, but randomly disconnects 1–2 times a day

• Sometimes the WiFi icon completely disappears

• Sometimes the WiFi icon is visible, but no available networks are found, even though WiFi networks are nearby (“Not Found / No Networks Available”)

• Internet becomes very unstable and slow

• Often I need to restart the laptop to temporarily fix the issue

What I have tried:

• Reinstalling WiFi driver

• Network reset

• Windows updates

• Restarting the router

However, the problem still persists.

If anyone knows a permanent and effective solution, please help.

Thanks in advance.

I upgraded my Dell Inspiron 15 3000 series to a qcn6144 as there were no other intel WiFi cards that did WiFi 6.  The AX200 I had, only worked on Bluetooth only.  Later on I decided to use the TP-link nano usb adapters and they worked fine.  The only reason for that was because I ordered about 4 AX200s with the same issue then moved to the QCNs and whilst the other laptops works and some physical connector issues, I binned the idea of changing such fiddly things along with unreliable Chinese imports.  So yea my intel AX200, the QCN6144 all came from China but na.  A set that worked on Bluetooth, if I could connect the leads to the QCN that were the right diameter then that's fine, it'll work but the next chip didn't because I find that the diameter of the WiFi plug was the same diameter of the WiFi card socket.  And I can't go to a US vendor or find a certified intel parts distributor to purchase off them.  There is some Chinese fakery going on.  I bought an HP dashcam, a Western Digital SSD, neither were recognised by the manufacturer.

We tried reaching you on a private message but did not receive a response. Please feel free to reply to the private message whenever you are available.

We have a handful of machines - Windows 10 Enterprise N, 1909 build 18363.959 with no issues.  Device manager Driver for Wifi 6 AX200 160MHz reports Intel, 5/4/2020 version 21.90.3.2.

To be honest the wifi range is not very impressive, but the AX 5GHz has been working well.  Throughput on 2.4GHz is not so great.

I know this is not your question, but just thought I would mention it.  No reliability issues at all on cards.

R

Yeah, the problem is, you want the service tag # on one computer.  This is not limited to one computer.  It's a widespread issue on our E7400 laptops.

I had this same exact issue this week. Had to walk the user through going to the BIOS and disabling all the wireless devices, saving, exit, the shut down and re-enabling them again. IT WORKED

Was there ever a resolution for this? I am having this issue on Latitude 5500's with the AX200. The problem is hard to replicate and therefore also hard to troubleshoot.

Dell support was not helpful during this annoying problem and I never found the exact fix, but we are no longer having the issue in the frequency it once was occuring

I updated the Wifi drivers from Intel and installed other updates from Dell.

We used group policy to disable "Allow network connectivity during standby mode(both plugged in and on battery)." I think that policy is changed a bit now.

After doing those things we have only had a couple of instances where the Wifi adapter disappeared. To get the Wifi adapter to show up again the laptops had to be completely shut down by holding the power button for about 30 seconds.

Still trying to figure this one out.

Hi Murian Cheese,

Your 30 Second Trick Worked!. My Wireless adapter disappeared and couldnt figure it out. After your suggestion, i reset and its back. Thank you!!