Now-a-days I myself facing this problem. Once I was downloading a file ( 1.3 GB) and when it was almost done like 97% it suddenly stopped and a message popped up, says my file is broken or some reason IDM needs to download this file from beginning. And that message box has two options one is OK and another is NO . No matter what i click on, the file starts from the beginning. So now am gonna show you a solution to this very annoying problem. BTW it worked for me several times but am not so sure about you guys but i guess its worth trying!!
