Vijay
Ansys Employee
You can try to reinstall the prerequisite, but if you continue receiving the same message and are not experiencing problems when running the ANSYS 2023 R1 products; the problem is just during installation, these errors can probably be safely ignored.
The .Net 6.x was just released in early November and it's possible the detection logic we have in the installer is not expecting this more recent version of Ansys.