While the search for a "free product key" for Microsoft Office LTSC Professional Plus 2021 is common, these types of keys are generally not available through legitimate, legal channels.
You will likely see "This key has already been used" or "Invalid product key" messages. ✅ Safe and Official Ways to Use Office While the search for a "free product key"
through a web browser by signing in at Office.com with a Microsoft account. Microsoft 365 Education: While the search for a "free product key"
System Vulnerability: Using "activators" or "cracks" to bypass licensing often requires you to disable your antivirus, leaving your entire system exposed to external threats. While the search for a "free product key"
Education/Student Licenses: Some educational institutions provide students and faculty with discounted or free access to Office 365 or specific standalone versions.
Microsoft 365 for the Web: Access core apps like Word, Excel, and PowerPoint for free through a browser at Office.com.