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4 Posts

02-20-2019

DK

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T460s Wifi does not work

2019-02-20, 12:48 PM

In our company we have numerous laptops. Four of these are Lenovo T460s. These four machines can not connect to wifi any longer, but all other mobile devices: iPads, Macs, other Windows-machines,Androids and Chromebooks works perfectly, so I suspect there is an issue with a recent driver update?

 

I have tried to reset all networks connections - no luck. I have tried to remove the wifi adapter in device manager and rebooted my pc and of course I have updated all there is to update, but that did not help either. Has anyone had similar problems?

 

Moderator edit: Added detail to Subject.

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Betreff: Wifi does not work

2019-02-20, 13:15 PM
Have you already looked at which channel your Wifi is set? Please select channel 1, 6 or 11 (2,4Ghz)
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4 Posts

02-20-2019

DK

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Betreff: Wifi does not work

2019-02-20, 14:41 PM

We have a Ruckus installation with ZD1200 and 29 access points, so channels are controlled by the Zone Director. Ther four problematic laptops has connected two the wifi for the past two years without problems. They will not connect now and this started witin the last few days simultaneously on all four. Since several hundres of other mobile devices have no issues, I conclude that the cause must be on the Lenovo laptops

 

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Betreff: Wifi does not work

2019-02-20, 15:02 PM
Do you have a Qualcomm Atheros QCA9377 WLAN Chip?
Please note, that this chip doesnt work correctly with a WLAN Standard 802.11n
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4 Posts

02-20-2019

DK

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Betreff: Wifi does not work

2019-02-20, 15:57 PM

No it is Intel AC-8260. The thing is, that is has worked fine for two years, and suddenly all four identical machines will not connect. 

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4 Posts

02-20-2019

DK

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  • Posts: 4
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  • Views: 58
  • Message 6 of 6

Betreff: Wifi does not work

2019-02-21, 16:23 PM

Problem solved. After a good deal of digging, we worked out that the certificate on the machine running the NPS-server had expired, now to days ago. Apparently the Lenovo machines were the first to discover this wich happened yesterday. Today other machines; Macs and other Windows machines started to have problems, which let us to the solution: renewal of the certificate. Apologies for the inconvenience, and thaks for the inputs.

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