If you want to check if your PC has the most recent update of Windows
Operating System : (Windows 10)
- There are three options, Select the Start Button , or type "Settings" on the Search Box or Click on this link https://support.microsoft.com/en-au/help/4027667/windows-update-windows-10 and it will automatically prompt to "Check your Windows Update Settings".
- Go to Settings
3. Click "Update and Security"
4. From Windows Update > Click "Check for Updates" button
If your PC’s Windows Operating System is updated it will notify you like the sample below
Windows Update FAQ link below also applies for other Windows Version like Windows 7 and Windows 8.1
Link for Reference : https://support.microsoft.com/en-au/help/12373/windows-update-faq