A user wants to install microsoft .net framework 4.0 on a win10 computer due to work needs. However, it failed during the installation process, and I also encountered the prompt "Microsoft.net framework 4 is already part of this operating system. There is no need to install the .net framework 4 redistributable package. The same or higher version is already installed on this computer. version of .net framework 4". What to do? Below I will share with you the specific solutions.

The reason is that Win10 system has integrated .net framework 4.6 by default, which is theoretically backward compatible, so we do not need to install .net framework 4.0, even the installation cannot be completed. If you must run some software that requires .net framework 4.0, you can try unchecking .net framework 4.6 in "Turn on or off Windows features" in Win10 and then install it.

Or you can deceive the software by modifying the .net framework version number in the registry.

step:

Microsoft logo key Win+R and enter regedit to open the registry.

Found location HKEY_LOCAL_MACHINESOFTWAREMicrosoftNET Framework SetupNDPv4Client

The full version number of Net Framework 4.0 you need is 4.0.30319.1.

You can try changing this value to the required version number. Note that modifying the registry requires permissions.

This is the solution to the problem of failed installation of .net framework 4.0 on Win10, prompting that it is already part of the operating system. During the installation of .net framework 4.0, win10 users who encounter the same problem may wish to use the above method to solve it!