Hello
I want to install Solidworks 2015 SP4 on Windows 10, but after 2% I would get an error message:
"The executable file
I:\Prereqs\vcredist\vcredist_x64.exe "  /q:a /c: "msiexec /i vredist.msi REBOOT =reallySuppress /q" was not installed correctly.
and thank you 
 
             
            
               
               
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              Hello 
To have a correct installation you would have to install the 2015 and then migrated to the SP5 and not the 4. The 5 and the most accomplished version.
             
            
               
               
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                gt22  
                
               
              
                  
                    June 24, 2016,  4:17pm
                   
                   
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              See attached image
so in my opinion for SW 2015 you have to go through windows 8
and the migration is done via the sp5 of SW 2015 for windaube 10
if I understood correctly
See also this link
http://www.javelin-tech.com/blog/2015/07/solidworks-compatible-with-windows-10/
* The following   SolidWorks products are not supported  on Windows 10  : SOLIDWORKS 2015 SP4, SOLIDWORKS 2014 SP5, and all  other previous versions and service packs.  This applies to all products (i.e .  eDrawings, Enterprise PDM, SOLIDWORKS Composer, etc.) 
waiting for + info
See also here
http://blog.alignex.com/solidworks-support-for-windows-10
@+ ;-)
             
            
               
               
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                pl  
                
               
              
                  
                    June 26, 2016,  7:32pm
                   
                   
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              Hello, the installation folders there should be a prereq folder  and a visual c or vc folder
You have to install this before installing solid