SIM PIN2 to unlock mobile broadband device

Anonymous
2017-12-01T16:17:20+00:00

My new Laptop is a Lenovo T470s (S/N PC0PXLX1) with a "Sierra Wireless EM7455 Qualcomm Snapdragon X7 LTE-A" WWAN card. 

After working well for 6 weeks, I am now unable to get an internet connection using that adapter.

Windows 10 network diagnostics tells me I need to "Enter a SIM PIN2 to unlock the mobile broadband device". I can find no way to enter anything.

Tech support at both AT&T and Lenovo have never heard of SIM PIN2 and each blames the other for the problem. I have talked to each several times and have been referred to "advanced tech support." 

My internet provider is AT&T.

This community has referred to a "provider specific software" that solved one participant's similar problem.

My provider, AT&T, has given me two PUK numbers. I suspect their PUK2 may be the SIM PIN2, but I still have no way to utilize that information.

HELP!

[Moved from: Windows Insider Program / Windows Insider Preview / Install, upgrade, and activate / PC ]

Windows for home | Windows 10 | Internet and connectivity

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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  1. Anonymous
    2020-01-27T02:27:34+00:00

    ohhh i finally did it the problem was Npcap Loopback Adapter

    i disable it and now we back in business

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  2. Anonymous
    2020-01-27T02:19:05+00:00

    hi

    unfortunately, it didn't work for me I update the last driver but nothing happened i know you sad firmware  but the problem is I can't be sure what is my actual device firmware and the other problem is that i don't have those Carriers my sim card Carrier is MTN so its not possible for me to update the right firmware for my device

     I own a Dell E72250 with

    5809e sierra wireless

    and my device model is EM7305

    I would be appreciated if you could help me THanks

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  3. Anonymous
    2020-01-26T19:32:28+00:00

    For me only a firmware update from Sierra Wireless took care of the problem.  Lenovo and Microsoft updates didn't help.

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  4. Anonymous
    2020-01-25T19:21:14+00:00

    This is a windows 10 problem nothing to do with AT&T or Lenovo, Win driver for LTE card needs to be updated, the WIN OS driver list is outdated.  This is just a stupid message Microsoft puts out to fool us. Uninstall all drivers then reboot and re install driver and firmware update from lenovo, if still doesn't work download LTE driver from Sierra wireless and start the process over.

    Microsoft has had this issue for long time and hasn't done anything to fix it.

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  5. Anonymous
    2020-01-25T15:44:01+00:00

    In my case, besides the PIN2 thing, the networking test wizard rightly pointed to NPCap that I had installed days before. I have installed the latest Sierra LTE drivers from Lenovo, but that didn't help. It seems that NPCap is not compatible with these Sierra LTE drivers. Maybe WinPCap will work - I didn't try yet. But after a thorough removal of NPCap with Revo Unistaller, the LTE was quickly up again.

    Thank you, After NPCap removal LTE is working.

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