Remember the golden rules:
Mastering the is about more than just clicking a download button. It requires a fundamental understanding of how Office components are structured and deployed. By understanding the distinction between the bootstrapper and the true offline source, checking your architecture (32-bit vs. 64-bit), and leveraging Microsoft's official Office Deployment Tool, you can reliably install proofing tools on any machine—even those completely disconnected from the internet. office 2021 proofing tools offline installer