Hey guys,
Thanks to everyone who helped and responded. We were able to finally get this working with help of TAC on remote session and below are settings in global properties for Radius that worked 100% when onprem radius was shut down, which is primary and auth worked flawlessly to azure one and then also when onprem was powered back on.
Customer was very happy its finally fixed after 2 years.
Thanks again!
Best,
Andy
Grateful to @SenpaiNoticed_U @Chris_Atkinson @PhoneBoy @mccabe for all the advice and guidance ✌️