Hi,
After upgrading an IFD-configured organization to CRM 2016 Update 0.1, reports are no longer worker when using the internal URL. All report controls are disabled... I'm seeing the following errors in my browser console:
Failed to load resource: the server responded with a status 404 (not found) internalcrm.company.org/Reserved.ReportViewerWebControl.axd;Version=11.0.3452.0&Name=Microsoft.Reporting.WebForms.Icons.PrevPage.gif
The problem is easy to solve, in my browser as I have to append the organization name to the URL:
internalcrm.company.org/.../Reserved.ReportViewerWebControl.axd;Version=11.0.3452.0&Name=Microsoft.Reporting.WebForms.Icons.PrevPage.gif
For the published URL, https://crm.domain.com, everything works as expected.