Win7 when installing .NET prompt error 0x000006d18 how to solve?

  
1. Shortcut key WIN+R, open the run menu.
2, run CMD.exe this program, right-click on this program --- run as administrator.
3, in the cmd program after running, enter: net stop WuAuServ, and then press Enter to close the service.
4, enter again: echo %windir%, then enter, a folder will pop up.
5, found in the pop-up folder: SoftwareDistribution, right-click the folder to rename it to SDold.
6, after the successful modification, enter again in the cmd program: net start WuAuServ, and then press Enter to open the service.

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