
Official Download & Installation Method
Go to Microsoft's Office download page:
Sign in with your Microsoft account (or create one if needed)
Enter your 25-character product key (from Walmart packaging)
Download the installer:
The website will detect your Windows version (32-bit or 64-bit)
Download size is ~4-5GB for Office Pro Plus 2021
Run the installer:
Double-click the downloaded OfficeSetup.exe
Installation takes 10-20 minutes depending on your system
Activation Tips
Activate within Office:
Open any Office app (Word, Excel)
Go to File > Account
Click "Activate Product"
Enter your 25-character key when prompted
If activation fails:
powershell
cd "C:\Program Files\Microsoft Office\Office16"
cscript ospp.vbs /inpkey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
cscript ospp.vbs /act
(Replace XXXXX... with your actual key)
Important Notes
Your Walmart purchase includes:
Full retail license (transferable between computers)
Support directly from Microsoft
Keep your product key safe - Write it down/store digitally in case you need to reinstall
No subscription required - Office 2021 is a one-time purchase
Verify authenticity - Ensure your package has Microsoft's holographic sticker