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If you are a student or a teacher, check your school's email. Many educational institutions pay for Microsoft 365 licenses for their students. You might be eligible for a free, fully legal subscription simply by using your school email address. ftuapps microsoft office
Microsoft Office is frequently targeted by hackers exploiting vulnerabilities. Microsoft regularly releases security patches to fix these holes. Pirated versions of Office usually cannot connect to Microsoft servers to download these updates. This leaves your computer permanently exposed to known security exploits. Get the Product Key (if required for perpetual versions)