Error: The Server is configured for Basic authentication. The connection between your computer and the web server does not use Secure Sockets Layer (SSL).

Hello,

We are running into an issue where users with Office 2010, when they click on a link to a Word document from a site protected with Basic Authentication, get the following error:

The Server is configured for Basic authentication. The connection between your computer and the web server does not use Secure Sockets Layer (SSL).

To resolve this problem, ask the server administrator enable SSL encryption on the web server (recommended). By default, Office 2010 applications can access and download files from a web server that uses Basic authentication only over an SSL connection.

Do I have to purchase a SSL certificate for this domain and require all users to access it via https://... ?

I know there is a setting in an office they can make to ignore this, but I don't want to request them to do that.

Thanks in advance for any advice.

Steve