This is caused by an issue with Skype (Lync) federation between the meeting organizer’s domain and the meeting participant’s domain. This creates a situation where Lync will not allow a participant from a non-federated domain to join a conference as an authenticated user, but because the Skype (Lync) client is installed on the local machine and the Lync Join Launcher page detects the client is installed it will attempt to join with the full client in-place of the web client. There is no option to use the Skype (Lync) client and join the conference as a guest.

Skype-to-Skype communication is a term we use to denote a direct connection between two Skype for Business clients for the purposes of voice, video, chat and/or desktop sharing.

Retaliation is also prohibited by university policy.

Affected Web browser clients cannot use Web Conferencing modality. Server Machine FQDN: lyncfrontend.yourdomain.com, Port:8061 Server Type: External-WebApp-Edge [HTTP side error:The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.] If the problem persists this event will be logged again after 20 minutes Cause: Service may be unavailable or Network connectivity may have been compromised. Never fear, this one is easy to fix! Which is the best version of office for mac. The Root Issue The application pool registered to the Lync Server External Web Site Reach application is set to activate On Demand.

Steps: Sign out Skype for Business --> Terminal 1. Rm -rf ~/Library/Containers/com.microsoft.SkypeForBusiness 2. Killall cfprefsd 3.

• Click on: Self Service > Personal Information> KU Directory > KU Directory Posn/JOB Info • By KU Work Phone, enter your phone number using this format 785/864-#### • Click 'Save' • After 24 hours, your phone number should appear correctly. • Depending on your phone model, touch the ' More' button then touch ' Sign In' or select the button on the phone located under those options. • Select ' User Credentials' • By Sign-in Address, enter your SIP address.