WIFI 6 (Mediatek MT7921) disconnects randomly

Wow! This is almost as good as the novel I'm currently reading! I just stumbled on this thread after googling "problem MediaTek MT7921 Wi-Fi 6 802.11ax PCIe Adapter" after having lost my wi-fi connection for the umpteenth time. This "phenomenon" began on a brand new, recently purchased HP laptop. Luckily, I have figured out how to reconnect, but now I'm annoyed that I have to keep reconnecting it. After all, it's a brand new laptop. Anyhow, I found it VERY interesting that you narrowed your problem to the router. Now, I'm not as computer savvy as others who have posted and I haven't noticed my Galaxy S20 losing wi-fi, but it's quite interesting what has been tried to solve this seemingly common problem among people with this particular adapter. And, of course, your final assessment. I wonder how many of us have faulty routers? How would I know if my router was faulty? And, if I also have a faulty router, what do I do? I've been connected via Comcast for about 6 years now - do I request a new router? Now that you narrowed your issues to the router, have you been able to ultimately solve your problem? Thanks in advance, Katirina

Hi, I know that RPanch407 had mentioned router and maybe that was his issue. Many of us have found it to be a driver issue. My issue was also with a brand new HP laptop. I had the same issue in 3 different locations, one of which had a brand new router... so that definitely was not the issue for me. If you have not tried the driver that was recommended in previous posts (I uploaded a link), then that would definitely be worth a shot and can be done in like 5 minutes. I do know that this network device does use some type of new technology and it is highly possible that it is somehow a computer/router communication problem.... Either way, the driver fixed it for many so it's worth a shot! Either way, please post your experience as it can help others find what works for them.

So, I did try your suggestion to download the driver from the link you posted: https://filedropper.com/d/s/WljNznfQMIlOHZQqur0wDmdl95GY6g.  Unfortunately, I did not find a zip file in that download, but then again, I already mentioned I'm not as proficient as others. I DID like the graduation pic, though!

Hi,

I had no idea what you were talking about as the file itself is a zip file... Then I redownloaded it and saw that a random graduation pic had made it's way in there... Haha. I have no idea how that happened. Anyways, if you still have it, there is also a folder inside called Mediatek. Just keep opening the folders til you find the files. The one ending in the .inf file is the driver. What you would need to do is go to the windows device manager, find network adapters, and right click the mediatek one. Click "uninstall device." Then afterwards, reinstall it. Windows will ask which driver... You will then locate the one I provided an use that. Anyways, I'll remove that file from filedropper as it has a graduation pic which wasn't even mine, but should have never been in there. Again, not sure how it happened! Sorry about that! The following link should be better without the unnecessary folders and graduation pic.

https://filedropper.com/d/s/zaKAT9tFBYutVnycyFBSU4TSuOcogi

I definitely recommend trying different drivers for these MediaTek WIFI cards as some of the drivers are in fact faulty. Also some people have had success with changing the DNS settings and flushing the DNS in command prompt. I was originally under the impression that only one device was affected by this problem. I also noticed that my phone (S21) automatically jumps to the 5Ghz channel of my router automatically but loses the WIFI 6 functionality. So I still have WIFI on that device its just a little slower. My pc however wont jump over to the other channel and when it tries it fails to connect and the only solution is to restart my PC. I narrowed it down to the router based on what I noticed once I reset it in the app. my router has an app and the typical IP address to access the settings. When I reset the router thru the IP access point nothing changed and all of my other devices reconnected normally. When I reset via the app I noticed both my phone, my wife's phone and my PC would not reconnect. They all showed they were connected but none of the devices actually had internet. That's when I realized that the router was what they all had in common.

Now I still haven't received a new router since I found this over the weekend. I will update once I receive it and let everyone know if it worked or not.