The following sites are known to need IE Compatibility View enabled in order to work:
Gibarco training (some wise.gilbarco.com videos need this enabled)
Internet Explorer Compatibility View
Tools > Compatibility View settings... > Add > Close > F5 (to refresh the page)
Once enabled, it remains on until you remove it. For most sites this is a one-time setting.
In regards to the Gilbarco extranet, you may have to turn it off and on depending on what page you are having issues with.