Skype for Business (Lync) – Easiest way to add trusted root certificate authorities to Edge
Ok here is a little tip when trying to add trusted root certificate authorities to Skype for Business 2015 and Lync 2010/2013 Edge servers. Microsoft have a list of Unified Communications Certificate Providers detailed here: https://support.microsoft.com/en-us/kb/929395 Windows now automatically downloads Trusted Root certificates when you access a web page on HTTPS. We can exploit this to get all Trusted Root certificates on our Edge servers which is required for Federation to work correctly. An example of this is where you only get one way IM or a federated partner may see your presence as unknown. ...