1. Close all Office programs, and Open a Command Prompt as Administrator 2. Navigate to the Office Installation folder %ProgramFiles%\Microsoft Office\Office15\ 3. type: fscript ospp.vbs /act 4. Should give result <product activation successful>
http://blogs.technet.com/b/canitpro/archive/2015/02/11/step-by-step-migrating-windows-server-2003-fsmo-roles-to-windows-server-2012-r2.aspx Then to demote the old one. On a domain controller, click Start, and then click Run. In Open, type ...