Are you trying to for a specific build?

: LTSC stands for Long-Term Servicing Channel. It's a servicing option for Microsoft Office that provides a stable and consistent version of Office for devices that don’t require the latest Office features but need a predictable, stable Office experience. LTSC releases receive security updates, but not the new features or updates.

Ever see a filename like and wonder what the hype is about? Here is why this specific version is so popular:

Microsoft Office LTSC Professional Plus 2021 (version 16.0.14332.20108) is a perpetual, device-based license designed for commercial and government customers who require a "locked-in-time" version of Office