To resolve a perpetual spinner when accessing the Virtual Terminal in Internet Explorer, enable the ActiveX Filtering option under the Tools menu by clicking on it. When enabled, IE displays a check mark next to the option (see the figure below). Alternatively, you can attempt to log in from another browser, such as Google Chrome.
When using Modzilla Firefox:
Go to 3 horizontal bars (top-right corner) > Add-Ons > Plugins where he found “Shockwave Flash” plugin at the bottom of the list. Instead of “Ask to Activate” we changed it to “Always Activate”.