Are you looking to install the Microsoft office on the Windows 10 or Mac having any technical issues can follow the on screen instruction are as following.
How do I Install Microsoft Office
1. Visit web office.com/setup and sign in with your Microsoft account.
2. Enter your product key.
3. Select Install Office.
4. If the User Account Control asks whether you want to allow the app to make changes to your device, select Yes.
Sign in to download and install Office
Go to www.office.com and if you're not already signed in, select Sign in.
Sign in with the account you associated with this version of Office.
After signing in, follow the steps that match the type of account you signed in with.
This completes the download of Office to your device.
Regards,
Willjoe