See https://blogs.windows.com/windowsexperience/2019/05/21/how-to-get-the-windows-10-may-2019-update/
I've upgraded it (via ISO download) on all three of my home computers (desktop, AIO and laptop) with no issues so far, touchwood.
I've upgraded it (via ISO download) on all three of my home computers (desktop, AIO and laptop) with no issues so far, touchwood.