Esri Maps for Office 3.0 Sign-In Problem

[Jay_Gregory]

I had Esri Maps for Office 2.x working perfectly with my ArcGIS for Portal 10.3 (with dedicated hosting ArcGIS for Server 10.3).  Everything worked as expected.  I recently upgraded to Esri Maps for Office 3.0, and suddenly I can't log in.  When I click the sign-in button, instead of being presented with my Portal's login page, I get en error that says Invalid redirect_uri Error:400.  Any thoughts on what's going on here?

[ThomasMontefusco]

Make sure you have installed Esri Maps for Office Resources for Portal for ArcGIS 10.3 or higher.  The Portal resources must be installed on same machine as your Portal machine.

The Portal Resources download can be found on ArcGIS Online | Download Esri Maps for Office

For more information, see: Working with Portal—Esri Maps for Office | ArcGIS

[MichaelRobb]

i am having the same issue.. what was done to resolve?

I have ensured I installed for Portal for arcgis 10.3 or higher as well as ensured it was installed on the machine that is running portal... I still get Invalid redirect_uri  ERROR: 400.