To find the choice to acquire a perpetual license, Visit the Microsoft 365 site, choose possibly "Personalized and Family" or "Enterprise," dependant upon the Model you want. Though protection updates and quality updates to Office LTSC are made available via the web, they may be hosted on-premises for disconnected networks. https://microsoftoffice2021profes54196.ageeksblog.com/26221678/manual-article-review-is-required-for-this-article