Azure AD Conditional Access policies troubleshooting – Device State: Unregistered

This post will provide valuable detailed information about troubleshooting of Azure AD Conditional Access "Device State: Unregistered" error.

AD FS 2016 Access Control Policies troubleshooting

The Access Control (AC) policies were introduced in AD FS 2016. See this official documentation to get familiar with AD FS Access Control policies concept and settings. Recently had to troubleshoot the following scenario. Customer has Hybrid Exchange environment with email boxes located in on premises Exchange 2010 and archives located in Exchange Online. Exchange …