AX 2012 R3 - A user cannot synchronize to a Document Template Library with federated authentication and no error message displays.

Issue description

AX 2012 R3 - A user cannot sync to a Document Template Library with federated authentication

and no error message displays,but If you are logged into SharePoint site and try attaching the file then,

it works fine.

Workaround suggestion

Setup is completed following the article below:

Configure and use Microsoft Dynamics AX document management with Microsoft SharePoint document libraries [AX 2012]

This a known issue and the logon prompt was remove when you are accessing the SharePoint Online

through federated access.

You need to logon to SharePoint online in a browser in order to generate the cookie cache

and fix the synchronization issue.

If you are not using federated authentication, where users have a direct connection to SharePoint Online,

then Dynamics AX client will get a normal logon prompt, and complete a basic authentication over SSL.