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giniguel
What's DOS?
Posts: 1
Registered: ‎06-18-2015
Location: paris
Views: 44,501
Message 1 of 16

Wifi Won't Connect "Authentification Problem" Yoga Tablet 2 1050F Lollipop

Hello

 

I accepted to upgrade android v5.0.1 in my lenovo tablette yoga 2 1050F and now it's impossible to connect my wifi network, I still use a WEP key. It worked fine before the upgrade and all my computers and other tablette work fine too.

 

I also tried to re-enter my key several time, I did a factory reset but nothing works.

 

So What can I do ?

 

Thank you for your help

 

Gilles

 

6/21/15: Edited subject line to improve searchability. Amy_Lenovo

shaun12246
Ctrl-Alt-Del
Posts: 10
Registered: ‎01-25-2015
Location: Ireland
Views: 44,282
Message 2 of 16

Re: authentification yoga 2 tablette 1050F

I have the exact same problem as you. I upgraded to Android v5.0 because I got notified and that was great.. but as soon as I tried to connect to my home WiFI, it only comes up with the following..

 

1) Saved, until you click connect. Stays the same for about 30seconds-1 minute

2) Worst of all, I hate this. It says Authentication problem and that's all. You can try everything from factory resetting, deleting/forgetting the network.. nothing works! 

 

It's horrible and nerveracking as I can't find a simple quickfix for this. I want to be upgraded to the latest OS and not be just be stuck on 4.4.2. 

 

I connected to a hotspot set up on my Windows PC using a downloadable application called Connectify which I have set just connecting to my normal network that I'd use (the one I can't get the tablet to connect to) and the tablet has no problem connecting to that. My modem is on channel 4 and always has been since it was installed as it has never been changed. I can connect to my network fine with any other device that I own, but not my tablet. I had no issues while the tablet runned on 4.4.2 but now I have no connection to my normal network and I'm forced to use a hotspot to access the internet.

 

Okay - people might see this as a temporary fix but the thought of your tablet not being able to connect to your network (something that it's supposed to), is a major let down. Of course, this is not the tablet's fault. It's the new update and apparently it's full of glitches and problems.

 

I'll let you know if I find any fixes for me.

 

Yours,

-shaun12246

 

 

Anonymous_User
Not applicable
Posts: 0
Views: 44,266
Message 3 of 16

Re: authentification yoga 2 tablette 1050F

If you both use WEP, change to WPA/WPA2 PSK encryption. No problem with connecting to my WI-FI

shaun12246
Ctrl-Alt-Del
Posts: 10
Registered: ‎01-25-2015
Location: Ireland
Views: 44,217
Message 4 of 16

Re: authentification yoga 2 tablette 1050F

Mine's WEP, but you have to change it to WPA/WPA2 PSK just so the tablet
will connect? Very peculiar

Anonymous_User
Not applicable
Posts: 0
Views: 44,206
Message 5 of 16

Re: authentification yoga 2 tablette 1050F

Well it is an old and unsecure encriprion, that is rarely used anymore, maybe they dropped saupport for it. Of course it could be just a bug. But changing the encryption wont hurt anyways.

Former Employee
Posts: 1,664
Registered: ‎09-16-2014
Location: US
Views: 44,091
Message 6 of 16

Re: Wifi Won't Connect "Authentification Problem" Yoga Tablet 2 1050F Lollipop

Lenovo is investigating customer reports that Wi-Fi via WEP is unsupported. I was able to confirm with the development team that WEP is supported on Yoga Tablet 2 devices running Lollipop.

 

It would help the investigation if several customers would be willing to provide logs capturing this failure event for Yoga Tablet 2 8 or 10 1050 models.

 

To capture logs, please follow this procedure: http://support.lenovo.com/us/en/products/tablets/yoga-series/yoga-tablet-2-830/documents/HT103449

 

Once you have collected the logs, please zip the files and attach them to an email which can then be sent to forumspi@lenovo.com. If the file is too large to send, please provide a link to the hosted file.

 

With the email, please include the following information:

 

Name:

Forums User ID:

Model: 

S/N:

Discussion Link: https://forums.lenovo.com/t5/Android-Yoga-Series-Tablets/Wifi-Won-t-Connect-quot-Authentification-Pr...

A description of the failure and any other information you would like to share:

Zipped attachment or link to hosted file:

 

Once I receive customer logs, I will open a case to escalate these reports for a solution.

 

Thank you,

Former Employee
Posts: 1,664
Registered: ‎09-16-2014
Location: US
Views: 43,960
Message 7 of 16

Re: Wifi Won't Connect "Authentification Problem" Yoga Tablet 2 1050F Lollipop

I'm still looking for customer logs for this issue to provide to the development team.

 

Thank you,

Anonymous_User
Not applicable
Posts: 0
Views: 43,937
Message 8 of 16

Re: Wifi Won't Connect "Authentification Problem" Yoga Tablet 2 1050F Lollipop

 I don't understand much, but is it possible, that the device is working in 802.11n mode only, where WEP is not supported?

 

-EDIT-

Btw, just tested, I am connecting perfectly to WEP incripted network at home.

 

Spoiler
Screenshot_2015-07-14-08-39-16-256.jpeg

 

 

-EDIT2- I don't know why this post is marked as solution.
shaun12246
Ctrl-Alt-Del
Posts: 10
Registered: ‎01-25-2015
Location: Ireland
Views: 43,771
Message 9 of 16

Re: Wifi Won't Connect "Authentification Problem" Yoga Tablet 2 1050F Lollipop

It's really annoying though, upgrading to a new version of Android. You don't expect problems like this to happen and now I'm pretty much stuck with a tablet that can connect to WiFi, but not mine. 

 

Here's some of the details that my computer tells me. 

WiFi Status

sexqq
Paper Tape
Posts: 3
Registered: ‎07-30-2015
Location: Poland
Views: 43,713
Message 10 of 16

Re: Wifi Won't Connect "Authentification Problem" Yoga Tablet 2 1050F Lollipop

Hello,

I've just sent logs to address forumspi.

 

My problem: I cannot connect to my home wifi when it's running in 802.11n ONLY mode. While in mixed mode (802.11 b/g/n) my 1050L is connecting in 802.11g mode.

 

Regards,

Artur

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