Hi, I wonder if anyone can help with this, (consider me a non-computer tech) since I’v have Avast pro, I cannot successfully open files downloaded with IDM, it doesn’t seem to allow some files that it considers corrupt. How do I overcome this - how do I get Avast to allow anything I download with IDM many thanks 
Corrupted files can’t be opened. Where does avast! come in ???
A screenshot would help.