Lync for mac 2011 does not work on os sierra

This may require getting IT involved to find it, or reviewing the SfB logs. If that matches up, the next step is to check the certificate which is on domain's federation services (ADFS) host.

* When signing in with the AD account, you are either a) Given a choice between 'Work or school account' or 'Personal account), b) usually automatically redirected to the company branded signon page. * Corporate domain is on Azure AD (Active Directory) * Skype for Business 2016 (any version, including latest in the insider 'Fast Ring' releases) To be certain it's the same, or similar-enough issue, here's the setup I've been working with (or against it seems): I've been having this issue for quite some time as well, and have been working with a Microsoft Skype for Business (SfB) support engineer on it. I have users that use MAC Mail for a client and also Outlook for MAC 2016 as a client - the back-end is an Exchange server but I am uncertain as to which version - I think it's Exchange 2012 but I cannot say for sure. My question is has anyone heard of anything that has changed that prevents MAC computers from authenticating to a Skype/Lync back-end? These credentials are the same that DO authenticate when a user logs on to their computer and email, so I know the network cred is valid. I then installed Skype for Business on my iMAC and a few other MACs (iMAC & MACBook) but Skype is having the same problem as Lync in that no credentials will authenticate. In essence: anything MAC no longer connects to Lync.

As new computers have been deployed many of them have no longer been able to authenticate to Lync and even the ones that used to work no longer work.

I have run into an issue and wonder if anyone else has seen this or heard of it: about 6 months ago I had a bunch of iMACS using Lync successfully.

Lync for mac 2011 does not work on os sierra