VS2017 installation prompt cannot find system path

Problem Description:

　　"Installation completed with warnings" when Visual Studio 2017 is halfway installed, return code 3

 

problem causes:

　　After the 360 ​​system was downsized, the folder "C:\ProgramData\Package Cache" was moved, and then the target folder was deleted, causing the installation to fail.

 

Solution:

　　Open "C:\ProgramData\" to add a new folder Package Cache, the problem is solved