NET Framework 3.5 installation error: 0x800F0906, 0x800F081F, 0x800F0907

CMD COMMAND:
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:G:\sources\sxs

error message:
windows could not find the required files to complete the requested changes. make sure you're connected to the internet and try again

This problem occurs when you try to install the Microsoft .NET Framework 3.5 on a computer that is running Windows 10, Windows Server 2016, Windows Server version 1709, Windows 8.1, Windows Server 2012 R2, Windows 8 or Windows Server 2012.
ERROR CODE 0x800F081F:
This error code can occur when an alternative installation source is specified and one of the following conditions is true:
The location that is specified by the path does not contain the files that are required to install the feature.
The user who tries to install the feature does not have at least READ access to the location and to the files.
The set of installation files is corrupted, incomplete, or invalid for the version of Windows that you are running.
To fix this problem, make sure that the full path of the source is correct (x:\sources\sxs) and that you have at least Read access to the location. To do this, try to access the source directly from the affected computer. Verify that the installation source contains a valid and complete set of files. If the problem persists, try to use a different installation source.

These errors may occur when you use an installation wizard, the Deployment Image Servicing and Management (DISM) tool, or Windows PowerShell commands to enable the .NET Framework 3.5.

In Windows 10, Windows 8.1, Windows 8, Windows Server 2012 R2, and Windows Server 2012, the .Net Framework 3.5 is a Feature on Demand. The metadata for Features on Demand is included. However, the binaries and other files associated with the feature are not included. When you enable a feature, Windows tries to contact Windows Update to download the missing information to install the feature. The network configuration and how computers are configured to install updates in the environment can affect this process. Therefore, you may encounter errors when you first install these features.

[thetechgeekguy]

Thanks sm, after 10 videos this is the only one that worked. You just achieved a new subscriber !!

[grim]

finally an answer that works!. Thank you :)

[wahabafridi]

thanks for the trick. i was gonna delete the window