You should only consider using the upgrade tool to install the new version on a device running Windows 10 version 1909 (November 2019 Update), or an earlier release. Otherwise, if you use the tool, a complete reinstallation will be performed. If you already have version 20H2 or 2004, you should upgrade using the Windows Update settings since the installation will quick as a monthly cumulative update. Typically, the process using the Update Assistant should take less than an hour to complete. Then you will need to click the Restart Now button to complete the installation.

Once the tool confirms that the hardware and software configuration are compatible, the May 2021 Update files will download on the device.Double-click the Windows10Upgrade9252.exe file to launch the tool and c lick the Update Now button.Download the Update Assistant for Windows 10 21H1 by clicking the Update Now button from the Microsoft software support download page.However, if you cannot wait, use these steps: It is never recommended to upgrade a system during the early days of the rollout, and even more when the device has not received the notification through Windows update. Download Windows 10 21H1 with Update Assistant However, the difference is that you can only perform in-place upgrades to the most up-to-date version available at that time.

The utility is like the Media Creation Tool. On Windows 10, the Update Assistant is a tool designed to install a new version of the operating system on a device that is not receiving the feature update through Windows Update for unknown reasons, but the hardware and software configuration is compatible with the new release. The Microsoft Update Assistant tool has been updated to upgrade devices to the Windows 10 21H1 (May 2021 Update) if they are not getting the first semi-annual update through Windows update.

Open the Microsoft download page, click the Update Now button, launch Update Assistant, and click the Update Now button.You can now download the Update Assistant to upgrade to Windows 10 21H1.

Windows 10 install assistant