When logging into our Portal for ArcGIS in Collector on Android we are constantly denied access. We can enter the Portal address in ColIector and be presented with the login screen however upon entering what would seem to be valid credentials and iterations of we get the following error in Collector; Could not sign in. Please check the url and credentials, and try again. I can see 401 errors caught in fiddler and IIS, Using the same account(s) on iOS is no issue. Have tried several iterations of user login (user@domain, user, user@FQDN). Some of the Android login discussion is here, Android ArcGIS Collector App Cannot Authenticate with Windows Active Directory , which is relevant to our previous configuration with ADFS. We have since moved to a configuration with federation and Windows AD user store and IWA in IIS as outlined here, Using Integrated Windows Authentication with your portal—Portal for ArcGIS (10.3 and 10.3.1) | ArcGIS for Server.
Interestingly I can login into portal website from Chrome browser on Android device(s).
Does anyone have this type of configuration and if so what is result. Does it work?
Collector for Android
ArcGIS Portal 10.3.1
Win 2008 R2
Answers and comments much appreciated.