What does HRESULT 0x80548210 (E_MBN_PIN_REQUIRED) mean?

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A SIM PIN is required before the requested operation can complete.

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E_MBN_PIN_NOT_SUPPORTED	E_MBN_PIN_DISABLED

E_MBN_PIN_REQUIRED

E_MBN_PIN_REQUIRED is a Windows Mobile Broadband (MBN) HRESULT. It indicates that the SIM is locked by a PIN requirement and the requested Mobile Broadband operation cannot proceed yet.

What to check

Prompt through an approved secure workflow and submit the correct PIN without logging or persisting it.
Check remaining retry attempts and avoid blind retries that could lock the SIM and require a PUK.
Refresh device state after a successful PIN entry before starting registration or connection work.

Microsoft: MBN error codes

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