How exactly are you trying, office.com/setup ?
Unfortunately this did not work, but thanks.It should already have a version installed, all you need to do is enter the Key and it will finish setup, launch Word and tell it you have a Key.....or you will need to uninstall the Trial Version and the error should go away....
Unfortunately this did not work, but thanks.
I ordered 2013 Home and Student digital download for PC and amazon directed me to Microsoft's site to download it.Which part didn't work? Let's start over, which version of Office did you purchase from Amazon? Did you get a Product Activation Key or is this a shrink wrapped version? Did Amazon instruct you to use Microsoft's Site or is it in their Digital Locker for download?
Other issues that can prevent the install, If you have a pending reboot from Updates no other installs can happen, if there is another install happening in the background (look in Task Manager for msiexec running).
Uninstall the Office that's on your system now, all of it, then restart and try the same site again. Should work.
Still not working, thanks.