Answer
If you are experiencing login blocking issues "AADSTS50105", please contact your administrator to assign access to this application.
The issue details:
AADSTS50105: Your administrator has configured the application [application name] to block users unless they are specifically granted (assigned) access to the application. The signed in user [user's email] is blocked because they are not a direct member of a group with access, nor had access directly assigned by an administrator. Please contact your administrator to assign access to this application.
Follow the steps below to troubleshoot login issues:
1. Go to Azure AD admin center , and select Enterprise applications .
2. Click the Foxit Admin console SAML application you created.
3. Select Users and groups , and click Add user/group to add users or groups.
4. On the Add Assignment pane, select None Selected under Users and groups.
5. Search for and select the users or groups you want to assign to the application.
6. Select Select .
7. On the Add Assignment pane, select Assign at the bottom of the pane.
Hope this article can help you. If you still have questions or comments about SSO login, please contact Foxit support (via creating a support ticket) for further assistance. Thank you.