Error Use the “source” option to specify location of files for .NET 3.5 installation

Hello Everyone, if you see this error :

Please open cmd as administrator then run this command :

DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:X:\sources\sxs

* Notes:
1. Replace the “X” letter on the above command according the drive letter of the Windows media. (e.g. If the Windows Media drive letter is “E” then you have to type: “DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:E:\sources\sxs”
2. If the command fails with error “0x800f081f: the source files could not be found” then open Windows Explorer and ensure that the ‘Source’ path “X:\sources\” is correct. If you see the “x86” and the “x64” folders in the root directory of the mounted installation media, then modify the ‘Source’ in the DISM path accordingly. e.g.

If a HyperV VM, you can add windows ISO