Once configured with proxy information and attempting to Activate or Check for Updates, no attempt to clear the settings can be accomplished successfully; the None option does not clear out the settings in the registry where the Proxy type, Proxy Name, and Port are stored. Manual registry modification resulted in the inability to get the product to load.
Complete product removal was necessary, along with manual registry key removal. Once completed, running the product installer resulted in a usable installation (however, activation is broken at the moment (other posts open regarding this issue)).
Alternative soltiontion: Build the TT to honor the OS/System Proxy settings, and let the forwarding be managed by Windows.