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  • Registered: ‎09-04-2018
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L470 and Bitlocker Network Unlock

2018-09-04, 13:18 PM



Has anyone managed to get an L470 to work with Microsoft Bitlocker Network Unlock, it just doesnt seem to work, and always prompts for the bitlocker PIN despite being wired into the network.


We are enforcing a PIN on bitlocker for our Windows 10 devices, but allowing network unlock when users are in the office connected via a wire.


All our many other models of Lenovo devices work perfectly with this setup, on the same infrastructure its just the L470's dont seem to do it at all, and always prompt for the PIN.


The network unlock certificate is correctly showing as a protector from manage-bde -status, it just doesnt seem to work.


UEFI only and secure boot are enabled in the BIOS.

Using the latest 1.66 BIOS


Anybody else got any experience of this.




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Re: L470 and Bitlocker Network Unlock

2019-08-02, 8:39 AM

I had the same issue with Lenovo T720q, other computer types in our company works fine.

In Windows System Event log there is an error message "Bootmgr failed to obtain the BitLocker volume master key from the network key protector: failed to get IP address." with Event ID 24682.


But this is maybe some network related specific. The issue is only on some Cisco network switches and on some not.


I´am on latest BIOS version.

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