Win10 system update Flash Player prompt error 0x80070002 solution

First, clear all windows update cache
1, press Windows + X, select “ command prompt (admin) & rdquo;;
2, enter: net Stop wuauserv, enter (here will remind the service to stop);
3, delete C: windowssoftwareDistributionDownload and all files in the DataStore folder;
4, enter again: net start wuauserv, enter (here The reminder service is turned on);
5. Finally, in Windows Update, try to check the update again.
Second, confirm whether the windows update & BITS service settings are turned on
1. Press Win+R to enter ""services.msc” (do not quote when typing), and press Enter. If the User Account Control window pops up at this time, please click “Continue”.
2. Double-click to open the “Background Intelligent Transfer Services” service.
3. Click on the 'General' tab to make sure that 'Startup Type' is "Automatic" or "Manual". Then click the “service status” button below.
4. In the same steps, the "Windows Installer", "Cryptographic Services", “software licensing service” and "Windows Update" are enabled.