I kept the source files for Office Starter, so if a machine was originally eligible for Office Starter (Office 2010 OEM Preload) then I will re-install it as there is no issue with licenses. The only case where this is not possible is Windows 10. If customers did not do certian updates before the update, Starter stops working and cannot be repaired. But there is a new App version of Word/Excel in the App Store, and unless I'm mistaken, for basic use it is free..