If you're trying to watch a game and you're seeing a continuous loading circle or connection error within the video player, this can usually be resolved by signing out of NFL Game Pass and clearing your web browser's cache, and relaunching the browser.
If you're unsure of how to clear your web browser's cache, please see the below links to instructions for the most commonly used browsers.
Internet Explorer 7 & 8 - http://windows.microsoft.com/en-us/windows-vista/delete-temporary-internet-files
Safari - http://support.apple.com/kb/PH17191
If clearing your browser cache and relaunching does not solve the issue, it may be related to a web browser media player plugin issue, please try the following steps:
Uninstall Adobe Flash Plugin
On a PC, do this through your CONTROL PANEL > ADD/REMOVE PROGRAMS
On a Mac, drag Adobe Flash Player from applications to your Trash; or use Finder to locate Adobe Flash Player install manager, and uninstall
Once you have removed Adobe Flash, restart your computer.
Finally, download/install Flash directly from Adobe's website: http://get.adobe.com/flashplayer/