Get Microsoft Office Product Key for Free [Updated some days ago] ✓ Instruction to use Free Activation Key ✓ Download Activator, if Key didn't help. Office is suitable for 32bit and 64bit systems, and it's compatible with Windows 10, Windows , Windows7, and Windows Server R2. If you are willing. You can download Microsoft Office and install it on your computer, but at some point the activation key will be required before you can use.