Getting Windows Installation Date With Command Prompt

1. Open “Run” dialog box. This can be done by pressing Win + R on the keyboard.
2. Now type “cmd” and hit Enter.
3. Now type the command given below in the Command Prompt Window.
systeminfo | find /i "Original Install Date"

This will display the Windows installation date and time.
Many people suggested some other ways too, like you can check the creation date of your Windows folder, or you can check the first update in your Windows Update history. But both of these methods work until and unless you did a clean install on your system. They will show different date if you have upgraded your version of Windows.
Instead of the complete command you can use systeminfo which will fetch you much more information about your system.