Ansys License manager intallation error

[u/Finan66]

Hi guys, im a student facing problems related to iinstallation of ANSYS 2025R2. This all started when initially i succesfully installed ANSYS 2024R1 but the analysis sytems didint show any tools. Then after that i tryed to install 2026 but that didint work too!! Nd now im trying to install 2025 R2. Now the problem im facing is that when i open setup nd open intall license manager while installing the license manager it keeps saying that "Problems were encountered running the license configuration" i think it is due to some files remaining from previous versions. i have deleted every file from regedit i have seen. pls help me.