APM Persistent SSO via Office365 Login Page

Hey all,

We are experiencing some issues when trying to get Persistent SSO to work with Office365 and was hoping to see if anyone else has been down this rabbit hole yet.

We use APM for authentication against O365, policy works great etc. However if we close a browser and re-open it to portal.office.com, the active session is removed and it just leaves the email address in it's place. But the APM side of things, the cookie is still persistent and working as intended once we get past the portal page, and it hands off to the APM which acknowledges the cookie.

Since portal.office.com cookies are out of our control we've been trying to find a way to "Keep me signed in" and we've found some documentation regarding ADFS, and making the Persistent SSO work through some Claims tailoring.

I'm trying to achieve the same, but not sure how this would work or if there is in fact any workaround for trying to leverage a persistent cookie as noted in the ADFS article at the bottom: https://technet.microsoft.com/en-us/library/mt148493(v=ws.11).aspx

Is there any clever way to allow the sessions to hold persistent cookies like the APM side is already when it SAML's through but allowing it to keep signed in through browser close for something non-ADFS like APM? From what I've gathered the Microsoft article is the fix via ADFS, but we are trying to accomplish the same without ADFS in place.

Thanks much!