Office 365 offers office desktop apps like Word, Excel, and PowerPoint. You can sign up for these services and install the apps on the computer. To perform Windows office 365 download on Windows 10, go to the Microsoft 365 portal page. Then sign in to your Microsoft account and select Install Office. Depending on the web browser, a prompt to Run the downloaded file will appear. The office gets things ready and then installs the Office apps on its own. After the installation, you will have to enter an email or phone number to receive a download link for the mobile apps.