Error signing into authentication app when activating Office 2016

When users were trying to authenticate through Office 2016 to activate the product, they were receiving the following error message upon being redirected to their AD FS login page while on the internal network.

An error occurred

An error occurred. Contact your administrator for more information.

Error details
Activity ID: 00000000-0000-0000-c32d-00800000005e
Relying party: Microsoft Office 365 Identity Platform
Error time: <Date> <Time>
Cookie: enabled
User agent string: Mozilla/5.0 (Windows NT 6.3;WOW64)
AppleWebKit/537.36 (KHTML, like Gecko)
Chrome/38.0.2125.111 Safari/537.36

I did some Googling and came across this Microsoft Support article which details the following steps.  Note that this pertains to Server 2012 R2 for me.

  1. Login to your AD FS server and open AD FS Management
  2. Select Authentication Policies
  3. Select Edit in the Primary Authentication -> Global Settings section
  4. Check Forms Authentication in the Intranet section and select OK or Apply