Solved: iOS Devices can connect via InTune, but not Android

We had a big issue at a client recently, which was quite a bear to solve.  They used ADFS with On-premise SSO (meaning that they didn’t use DirSync to push passwords into Azure AD/Office 365), so when clients come to authenticate over the web via the Company Portal App, they were referred to our on-prem ADFS for authentication.

This worked fine for our iOS and Windows Devices, no issues at all!  But then when we tried to use Android devices, they would be presented with the following error message:

The Symptom

"Cool, I'll call the IT admin, OH SHIT that's me!"
Could not sign in. You will need to sign in again. If you see this message again, please contact your IT Admin.

Don’t you love those messages that tell you to contact yourself? Continue reading

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