Windows 10 is now the most popular operating system in the world, and with Windows 7/8.1 soon will not be supported by Microsoft, Windows 10 will be the first system. With the update of the office office, the current update of Office 2019 must be installed on the Windows 10 system. So this is why other systems will eventually be eliminated.
To activate Windows 10, you need a digital license or product key. If you are ready to activate, select “Open Activation” in Settings. Click Change Product Key to enter your Windows 10 product key. If Windows 10 was previously activated on your device, you should automatically activate a copy of Windows 10.
A digital license is an activation method in Windows 10 that does not require you to enter a product key. If you upgrade to Windows 10 for free from an active copy of Windows 7 or Windows 8.1, you should have a digital license instead of a product key
Free Windows 10 Product Key Update 2019
Windows 10 Professional: 8N67H-M3CY9-QT7C4-2TR7M-TXYCV
Windows 10 Enterprise: CKFK9-QNGF2-D34FM-99QX3-8XC4K
Windows 10 Enterprise N: DPH2V-TTNVB-4X9Q3-TJR4H-KHJW4
Windows 10 Enterprise 2015 LTSB: WNMTR-4C88C-JK8YV-HQ7T2-76DF9
Windows 10 Enterprise 2015 LTSB N: 2F77B-TNFGY-69QQF-B8YKP-D69TJ
How to Upgrade from Windows 7 to Windows 10?
As stated at the beginning of the article, Windows 7 will not be supported by Microsoft in 2020. At this time you should upgrade to Windows 10, then how to upgrade, as shown in the video below: