The Windows 10 October 2018 Update isn’t as significant as the April 2018 Update, but you’ll find a number of new improvements and several new features. Microsoft will start upgrading devices with newer hardware first, and then, when version 1809 has proven to be stable, the rollout will continue to other computers. Microsoft is expected to begin the rollout of the refresh some time during the first or second week of October, but it’ll be a gradual release, and it could take weeks until every device receives the update. (Microsoft designed this tool to get around Windows Update when it’s not working.)
If the tool doesn’t work, then you should try the Update Assistant (when available), which is a tool similar to the Media Creation Tool, but it only allows you to perform an in-place upgrade. Also, you can use the Media Creation Tool to create a USB bootable media, which you can use to start your device to upgrade to the latest version of Windows 10.
