Earlier this week, Microsoft released the final version of Microsoft Office 2013 to MSDN and TechNet subscribers. By now many of you might have installed Office 2013 RTM on your Windows 7 and Windows 8 machines. Unlike Office 2010, Office 2013 setup doesn’t ask you enter the product key during the installation. So, once you complete the installation, you need to enter the key and activate your product. Office 2013 is compatible with only Windows 7 and Windows 8 operating systems. Vista and XP users need to upgrade to Windows 7 or Windows 8 to experience the newest version of Office. After completing the Office 2013 setup, just follow the given below steps to activate your Office 2013 copy. Activate your copy of Office 2013 Step 1: Once installed, run Office Word, Excel or any other program. You will immediately see Activate Office dialog. Step 2: Click Enter a product key instead option, enter the 25 character product key and then click Install button to activate your copy of Office 2013. Step 3: Click File menu and then click Account to see Product Activated message on the right-hand side.