Unable to join Adobe Connect sessions in the Connect Add-in after September 9th, 2017.

On September 9th, 2017, a certificate within the Adobe Connect meeting code will expire.  All Adobe Connect customers that join Connect sessions (Meeting, Seminars, Virtual Classrooms) using the Connect Add-in will be affected.  This issue will impact all versions of Adobe Connect.
What it looks like:
Starting on the 9th of September, users without the patched version of the Adobe Connect add-in (11.9.980.387) will see the following screen when attempting to join a Connect Session and be unable to join.

How to fix it:
Customer with Adobe hosted Connect accounts:
The new Adobe Connect Add-in will be available starting on 9 August 2017.  It can be downloaded and installed from here and will also be available via our lightning installer from Connect within meeting rooms.
Customer with accounts hosted by Adobe (Connect account contains *.adobeconnect.com) will be forced to update their Connect add-in to the new version starting on 8 September 2017.
To help ensure all users can obtain the new Connect Add-in, version 11.9.980.387, you will be asked to install the new Add-in under the following circumstances:

You try to start or join an Adobe Connect meeting for first time and have an older version of the Add-in installed.
You start screen sharing, application sharing, or share PowerPoint (PPTX format) files, and don’t have the latest version of the Add-in installed.

On-Premise/Licensed Customers:
NOTE:  The below information is only for Adobe Connect on-premise Administrators.  
 Along with the above options, Adobe Connect administrators that host their Connect servers on-premise can follow the following tech-note to force the new version of the add-in.   Force new version of add-in.