[Windows OS] End of support for Windows 7 and Windows 8.1
Windows 7 support ended on January 14, 2020
Microsoft has terminated the Windows 7 support since January 14, 2020. Technical assistance and software updates from Windows Update that help protect your PC are no longer available for the product.
For more detailed information, please visit the link as shown below :
https://support.microsoft.com/en-us/help/4057281/windows-7-support-ended-on-january-14-2020
Windows 8.1 support will end on January 10, 2023
After January 10, 2023, Microsoft will no longer provide security updates or technical support for Windows 8.1.
For more detailed information, please visit the link as shown below :
https://www.microsoft.com/en-us/windows/end-of-support?os=win8&r=1