Lync 2010 services sign in asks for credentials. when the information is entered, it comes back asking for the info again and again. no luck.
the exact requirements are attached. I have no idea why this happens. we have a lync edge server 2010, and lync 2010 front end server
any assistance in understanding this and how to resolve it will be appreciated. most of anything I have found on the web relates to some 365 office service. We don't use this 365 service. so please no resolves for that.
The embedded image was one i found on the web