This is a tool to verify your installation of .NET Framework
This tool clean your installation of .NET Framework. After proces run Windows Update and check and Install updates.
Thank you Bartlomiej, but it didn't worked. The clenaup tool didn't work on my computer.
Then I've tried to install .NET 4.5.2 and Error 0x80240016 appeared.
Looking for an explanation I arrived to this page
Error 0x80240016 de Windows Update - Ayuda de Windows
Finally I ran the assistant to solve Windows update problems and then installed again .NET 4.5.2 and has finished succesfully.
It's the first time I use the community and I'm gratefully amazing for your quick response.