Windows10 can not be installed. Prompt error 80244021 how to do

First, stop updating the service
1, open the "Control Panel", change the view mode to the big icon, and then click <;Administrative Tools”.

2. Open “Services  in “Administrative Tools”.

3. Right click on the "Windows Update" service and click “Stop”.

Second, delete the temporary file
1, enter the C: WindowsSoftwareDistribution directory.
2, open the DataStore folder, and then delete all the files and folders inside.

3. If the prompt requires administrator rights, click “Continue”.
4, back to the superior directory, then open the Download directory, delete all the files inside. Similarly, if you need administrator privileges, click “Continue”.

Third, restart the update service
1, according to the first step, find the "Windows Update" service, right-click to select "start" “.

2, close all open windows, and then reinstall windows updates that cannot be installed before. At this time, it will be able to install smoothly.

Note: The above method is a Microsoft official recommendation to ensure system security.
The applicable error code is: WindowsUpdate_80240016/0x80240016