Windows 10 KB5066791 is the last update if you don't subscribe to ESU (Extended Security Updates). Download it today.

Windows 10 can run on both 32-bit and 64-bit processor architectures. If you have a computer with a 32-bit setup, you can upgrade to the 64-bit version without acquiring a new license. The only caveat ...

Learn how to download and use Windows 10 Upgrade Assistant, check compatibility, and finish the upgrade without losing files.

Microsoft no longer officially supports Windows 10, but you still have an option to get one year of free security updates.