@TiagoSS Hello TP-Link forum,
They say "A picture is worth a thousand words", so I sent 3 pictures saving 3.000 words 

Last weekend, I started with this problem of not getting an IP address neither on my PC nor my other devices (e.g. mobiles).

I did a factory reset to the router and a network reset to my PC WiFi, and it came alive... and I thought to myself the problem was solved.

This weekend, again, the same problem... so I cannot do the resets, every day. We need a permanent fix to this "bug".

It seems to be something around the Wireless Configuration or the DHCP server not behaving as expected, but you know better than me, what it could be.

Things that are working well, the 4G connection is sound, and curiously when I connect via my TP-Link extender TP-Link TL-WA855RE, which is always on, it works fine.

When I connect to my main WiFi using TL-MR6400, I can get a WiFi connection that says "no internet, secured" on my Windows 11 64-bit PC.

But, I cannot get a valid IP... that is the "router bug".

Can you help me?

Many Thanks,

Tiago

Hello @Sunshine,

I am not using any static IPs on my PC or in any of my mobile devices. They are all configured with "DHCP: Auto".

I did not tried to configure a "static IP" on my PC, since it does not seem a good way going forward.

I just got an idea, may it be a conflict of the same DHCP wireless configuration ranges between the existing TL-MR6400 and the new arrival of the TL-WA855RE?

If so, what is your recommendation to correct it? 

Any other potential solution is welcomed here.
Many Thanks,
Tiago