Wi-Fi is broken after updating to 2013 One UI

[none1198]

After updating to 2013, Wi-Fi is broken, I can't connect to my network. Before this update, I had no problems connecting to my router at all. I did a full reset, but it didn't help. I've seen similar reviews on the Internet after upgrading to One UI.

[AndrewL]

@none1198: Please can you confirm the model number of your TV? This can be found on the sticker on the back of the device, or in Settings > Support > About This TV. Also, can you confirm if you performed a factory reset on the TV, or reset the network settings? 

To troubleshoot the issue in the meantime, please try powering off your TV > Unplug it at the wall > Unplug your router for 30 seconds, then plug it back in and wait for the calibration process to complete > Plug your TV back in, and power back on > Check your network status. If the issue persists, please let me know what your network status currently says. 

[none1198]

My TV model is QE55QN85CATXXH. I did a network reset and a full TV reset and it didn't help.

This happened right after the update, it just stopped connecting to my network.

I'm a certified MikroTik engineer and there are no problems in my network, absolutely all other devices are working and I didn't update the router software or anything else. Just like the TV worked BEFORE the 2013 update.

All the tests of the TV show that Wi-Fi is alive, it finds networks, but after entering the password it does not receive an IP. So, I tried entering the data manually, entering different DNS, using a VPN, turning off 5 GHz Wi-Fi, leaving only 2.4 GHz, changing the security settings by installing WPA2, even manually setting the channels. Absolutely nothing helped. It's a TV software bug and I shouldn't waste time tweaking something that worked.

[AndrewL]

@none1198: While I understand that you may have run through some of these steps previously, please take a look at page 230 of the user manual by following the link below, where you will find some troubleshooting tips for any network issues you may be having with the TV. 

https://downloadcenter.samsung.com/content/UM/202404/20240426190921443/BN81-24055C-460_EM_OSPDVBEUC_...

[robth]

Exactly my issue (but with model QE55S95CATXXN). No problems before the update, WiFi does not connect anymore after. It does show the networks and self diagnosis did not report any issue. Cabled connection does work. I'm an engineer too and I expect Samsung to fix the issue ASAP.

[AntS]

Hi @none1198  and @robth ,

What routers are you using?

And possible suggestion here that you may have tried already... but in case you haven't: Menu > Settings > All Settings > Connection > Device Name > User Input, and remove the inch-value quotation mark (") if there is one after the screen size number. Let us know if you get any joy with that.

[robth]

Thanks for your reply but there is no such character in the device name. There is no problem with the network. All devices work. Including the TV before the update.

[mattialibera]

Same problem; my model is QE55S95CATXZT; any problem with other devices connected to same WiFi SSID.

I've tried to:
- set same SSID and password on smartphone hotspot and it doesn't work anyway
- replace password special characters so that password has same length and is composed only by [a-z][A-Z][0-9] but it doesn't work anyway
- replace every password char with 'a' char to have a password with same length but made only by 'a' and it connect successfully.

So I think it could be a problem related to the size of encoded SSID password

In cases TV is not able to connect to WiFi, connection procedure crashes before TV tries to contact router to login because in router logs there isn't any log related to TV connection attempts.

To reproduce the issue it should be enough to try to connect to SSID having a password with more than 24chars [a-z][A-Z][0-9]

PS: I'm a system engineer too 🙂

[robth]

This evening I set-up a hotspot on my mobile phone with a different SSID and 10 char passwd. That worked! When I tried connecting to my "normal" Wi-Fi it failed again. I looked into my router and Wi-Fi access points (I don't use the router's Wi-Fi but use Unify AP's instead). I had a static DHCP entry for the TV in the router, which I removed. I also recently had an AP firmware update (before the TV update, so it didn't cause the TV issue). I noticed that my AP security was still set to WPA2 and I changed it to WPA3. After that the TV's Wi-Fi worked again. Of course I should have tested the TV after just configuring the router, but it was not nearby so I was lazy 😉 So I don't know for sure what fixed it. My guess is the AP, since before I also tested the TV with a fixed IP and that didn't work. By the way, my Wi-Fi password is 32 characters long including special characters, so that works for me. Maybe the TV sees the network as a "new" network due to the WPA3 change? You guys could try changing the SSID just to test this hypothesis?

[none1198]

I was able to connect the TV only after disabling "Management Protection" and leaving only WPA2. In any case, this shouldn't have been done before the update, and everything else didn't work. I'm writing this in case it helps someone else and saves time.