Summary
If you have Windows 10 versions 1507, 1511, or 1607, a full-screen end of servicing notification might appear on your device.
The notification shows the end of service date for your version of Windows 10. For more details on the end of service date for your version of Windows 10, please see the Windows lifecycle fact sheet.
Versions of Windows 10 that are listed as end of service have reached the end of their support period and will no longer receive security updates. To keep Windows as secure as possible, Microsoft recommends that you upgrade to the latest version of Windows 10.