Office 2013 was uninstalled carelessly by someone, but unfortunately Office product key is not saved safely, so I couldn't activate it to use again after installing Office 2013. But I am afraid that I would not be able to install Office 2013 again as I lost the product key. I lost Office 2013 product key and I need it now as I want to reinstall my Windows system. I forgot Office 2013 product key and couldn't activate Office 2013 after reinstalling operational system. For Office 2013 users, they may be familiar with the following scenes:
