Use the command line:
takeown /f folder1\folder2\*
Pregunta
Setting it file by file works, but is slow.
Selecting all of them at once doesn't have this configuration.
And the files can't inherit the security properties of the folder because they don't have my ownership.
Solución
Use the command line:
takeown /f folder1\folder2\*
Otros consejos
Run command as admin
takeown /f . /r /a /d y