I've tried opening SN in both Chrome and IE and both go straight to the instance.

The issue is that ADFS is set to automatically pass credentials.   SideDoor doesn't use ADFS, it uses LDAP, so it doesn't pickup ithe IDS.

The SideDoor may be our solution, but to do so means we have to maintain ID's in Service Now.   I'm trying to avoid that as I want all the ID's managed by Active Directory via our IDM solution.

Kris.