Windows Office Hours: September 18, 2025

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Get answers to your questions about adopting Windows 11 and managing Windows devices across your organization. Find out how to proactively implement and monitor Zero Trust practices. Get tips on keep...

Heather_Poulsen

Updated Jun 23, 2025

Windows-Office-Hours-September-18-2025.ics44 KB

Office Hours

Petr_Falc

Copper Contributor

Sep 18, 2025

Hi there, this year we start seeing recurrent issues with Windows Hello for Business PINs stop working after BIOS updates (Dell laptops). We have never seen such issues happening before. Is this a known issue? What could be the reason and what would be the best way to prevent that? (Windows 11, 23H2 and 24H2)

EricMoe

Microsoft

Sep 18, 2025

Hi Petr_Falc - I would strongly recommend opening a support case with Dell on this issue. The Hello credentials are securely stored in the local TPM and if the TPM gets cleared, you will lose the ability to log in with WHfB.