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WINBIO_E_FAST_USER_SWITCH_DISABLED
WINBIO_E_FAST_USER_SWITCH_DISABLED is tied to the Windows account-switching path. WinBioLogonIdentifiedUser is specifically defined to switch to the account associated with the last successful identification operation, so disabling fast user switching blocks that workflow even when identification succeeded.
Separate identification from user switching
- Verify that the immediately preceding identification succeeded and produced the intended identity.
- Confirm the application is actually calling
WinBioLogonIdentifiedUserrather than using WinBio only for in-app verification. - Inspect Windows sign-in policy and session configuration for the account-switching feature.
A successful biometric match does not guarantee that Windows can perform the requested session transition. Treat this HRESULT as a post-identification logon-state problem. Repeating WinBioIdentify or improving scan quality cannot enable a Windows feature that policy or system configuration has disabled.
WinBioLogonIdentifiedUser · Client application functions
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