Are you still using Microsoft Office 2007? Microsoft has discontinued its support for this program. With immediate effect, you should therefore no longer use Office 2007.
With effect from today, Microsoft will no longer make available updates, problem solutions or technical assistance for Office 2007. Users will no longer be receiving any security updates, which would protect them against viruses, worms, spyware and other malware, either.
If you are still using Microsoft Office 2007, you should install a new version as soon as possible. Otherwise, you will be exposed to considerable security risks!