Hi @Anonymous ,
Close the installer, Kill if there are any background process in the task manager.
Disable Antivirus and firewall temporiraly.
Try right click on the installer and use the Run as Administrator.
If you still see the same issue, Attach the installer log files from below location in the next reply.
If you find my answer solved your question, please click the "Accept Solution" button
Sujay D'souza