Because of a problem (created by me) in Office, I had to reinstall Office 2013. I don't know why, but I managed to broke the reinstall process.
Sometime ago I wrote about adding a promoted site in the new office 365. One of my blog visitors asked how can he restore the Manage Promoted Sites, because he deleted all the sites and that option was gone.
Modificarea permisiunilor anumitor chei de regiştrii pentru a permite procesul de dezinstalare a anumitor aplicaţii.