HI anuprahulsarkar I'm sorry that you encountered such a problem. If you are installing with a non-administrator account, you might encounter this issue. You will need to use the original account that was used to install the software on the computer. You can also try installing other products. Kayla Reallusion
HI anuprahulsarkar Don't know if you have solved the problem yet. If not, Please provide your system information file and the Reallusion Hub log file to help us identify the problem. Find Reallusion Hub log file here: C:\Users\%username%\Documents\RLLauncher.log Kayla Reallusion