Installation guide Office 2021 Professional Plus
1/2/3/4/5 PC - 32 & 64 Bits
1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor
2 gigabyte (GB) RAM (32 bit) or 4 GB RAM (64 bit)
4 GB of available hard disk space
DirectX 9 graphics device with WDDM 1.0 or higher driver
Remember, the key you have purchased is a prepaid code that is not compatible with the pre-installed software. This is an original Microsoft product. Uninstall the previous version of Office that you have on your PC and restart your computer. This is important to avoid compatibility problems.
Once the download is complete, follow these steps:
Deactivate your antivirus to run the downloaded installer (IMPORTANT SPECIAL STEP AS SOME ANTIVIRUSES, LIKE THE NORTON, DETECT IT AS SUSPECT).
Right Click on the file and then select the option, "run as administrator"
You will get this warning (Don't worry it's a normal process), Then Click the YES Button
Finally, click on the "Install" button. This action unzips the application and will install your product.