ADFS 3.0 Additional Authentication Rules

compdigit44
compdigit44 used Ask the Experts™
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I know others have asked the same question and know it cannot be done but I am trying to understand the technical reasons  behind this. In ADFS 3.0 if I create an Additional Authentication Rule to target a specific user agent string then force forms authentication, this will not work. Why?
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MaheshArchitect
Distinguished Expert 2018

Commented:
if you could tell us exact requirement please
AmitIT Architect
Distinguished Expert 2017

Commented:
Provide more detail, what exactly you want to achieve.

Author

Commented:
Right now when vendor supplied Droid device use an app that is federated it fails at a white screen since it is trying to use WIA. We were trying to use an additional authentication rule to filter on the user agent string then force forms authentication.
Architect
Distinguished Expert 2018
Commented:
Best option would be use only form based authentication for internal network as well
Because if WIA is selected along with fba, it actually overrides fba
You can configure agent based rules but it won't gurantee that all browser variants and versions will be covered with rule

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