Help Idm always stop at 99% and restarting download again

Sir/Mam/Pros ganito po gamit ko po ung allnet v5.6 tapos triny ko magdownload ng 750 mb kanina na movie tapos pag dating sa 99%(ganun din po kahit 50mb lang as in lahat ata) laging may nagpapop up na message na idm started to download the file using one connection because of data corruption when newly received data on several connections did not match the same data downloaded earlier help..triny ko na po uninstall AV ko pati firewall disable na rin tapos sa YøùTùbé pag nagtratry ako magdl sabi forbidden daw po babad na po ako sa google wla parin pong pagbabago. uninstall idm po 5x napo kahit po ung sympsonteam rar. na free net ganun din po..nakakadepressed talga almost 2 and half hours ung kanina. sana po may makapansin huhu