You degenerate ape this is from 2012 I bet you weren't even born back then.1. Check your Laptop/PC driver.
2. Check your connection.
3. Reinstall your Rohan.exe.
If you still "can't download this file", open your task manager, go to processes and find "service host: network service" and click it, then you can kill the "DNS Client.".
It works for me.