TUOffice-LTSC→o365
This simple tool sets registry keys and downloads the necessary files (updates) to convert Office LTSC to Office 365.
After completing the Office update, the license must be changed manually.
To do this, open any Office application (e.g., Word),
go to Account in the navigation bar and click on “Change License.”
You will then be prompted to log in with the user who owns the O365 license.
