KB484200: How to detect if an HTTPS connection is being used for MicroStrategy for Office

To use the Strategy for Office add-in, the Web server must be configured to use an HTTPS connection. 
Otherwise, you may get the following error:
A problem occurred while trying to reach this add-in.

To detect a HTTPS connection, open your manifest file and confirm the Library URL being used. 
Please note that Strategy for Office requires a secure connection (HTTPS) in addition to a valid certificate. For details, see KB484201: How to detect if a certificate is valid for MicroStrategy for Office.