Complete Guide: Download and Install or Reinstall Office 365 on a PC

Download and install Office 365 on your PC by signing in to your Microsoft account through www.office.com/setup and selecting "Install apps" to get the setup file. Follow the prompts to complete installation and activation.​

Steps to Download and Install or Reinstall Office 365 on a PC


  1. Sign in at www.office.com/setup with your Microsoft account linked to Office 365.​
  2. Click “Install apps” and download the installer.​
  3. Run the downloaded file, follow all prompts, and allow changes to your device if prompted.​
  4. After setup completes, open any Office app (e.g., Word or Excel) to activate and start using Office 365.​

Key Points

  • Reinstall Office 365  allows multiple installations per subscription, typically up to 5 PCs.​
  • Stay connected to the Internet for activation and updates.​
  • Use Microsoft’s support tools if you encounter installation or activation issues.
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