Windows OS daily basis update, not an option to fix the windows update error 0x80070015. Because many users reported that they are getting error 0x80070015 on the system screen. So you should need windows system file checker tools.
Here I share with you some steps for scanning the system and restoring Windows OS corruption files:
Shut the error wizard
Visit the Start menu
Write command on the search bar
Press ctrl and shift keys
Now click the Enter button
You will get a concordance prompt on your system screen
Press the Yes button
Now a command screen will seem on the PC
Type SFC/scan now of the command system screen
Click the Enter button