Unknown HTTP error while retrieving PRT token with smart-card logon

[Eric Bus]

We are currently migrating our proprietary smart-card logon system to Entra ID in combination with Entra CBA. We have the single sign-on system working for password-pased logons on the PC. The user gets a PRT and `dsregcmd /status` shows a working configuration.This is not the case when a user signs in with his smart-card. The user get access to the machine, but for some reason the retrieval of the PRT fails with an error that I cannot find anywhere online:+----------------------------------------------------------------------+ | SSO State

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