Microsoft Office 365 is a popular productivity suite used by millions of users worldwide. One of its key features is the proofing tools, which help users check and correct grammar, spelling, and punctuation errors in their documents. However, not all users have a stable internet connection to download and install the proofing tools online. In this paper, we will discuss the Office 365 proofing tools offline installer, its benefits, and provide a step-by-step guide on how to install and use it.