However, there’s an important technical clarification to make first:
That means what you’re describing is likely a release — often found in unofficial / cracked software archives — or a confusion between product generations. Microsoft Office 2019 Pro Plus v2102 13801.2026...
are typically in the 16.0.x range (e.g., 16.0.12527.xxxxx). A version number like 2102.13801.20266 corresponds to Microsoft 365 Apps for Enterprise (formerly Office 365 ProPlus) or Office LTSC 2021 — not Office 2019. Microsoft Office 2019 Pro Plus v2102 13801.2026...