The last step on ADFS (Active Directory Federation Services) upgrade from Previous version to the latest one is – Raise Farm Behavior Level (FBL). before we run the “Invoke-AdfsFarmBehaviorLevelRaise” command we should test the that the all environment is ready for upgrading . run “Test-AdfsFarmBehaviorLevelRaise” and check that all tests pass successfully. THE PROBLEM IfContinue reading “On Upgrade , Raise Farm Behavior Level (FBL) on ADFS Farm Failed”