Dumontis License Manager

Dumontis License Manager is a lightweight Excel add‑in that authorizes signed-in Microsoft 365 users to use licensed Lean applications, developed by Dumontis. It prevents unauthorized distribution, keeps access controlled to align with your internal roles and responsibilities, and ensures that only approved users can open and use the applications and the data contained within them. The add‑in is macro‑free, transmits only the signed‑in account ID for verification, and never accesses workbook content or any other customer data. It is designed for straightforward, IT‑friendly deployment.