How to resume downloads on IDM:
First we have to understand the cause of such incidents; some sites use temporary links that cannot be requested twice or temporary links that expires once the session is completed. So when your download gets interrupted the link dies and you can’t resume your download from same link. So what Internet download manager does is to look for the new link and ask you to restart your download from the beginning but I will teach you a simple way to obtain the new link and resume your download without restarting your download from beginning.
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Once you receive the warning to restart your interrupted download from beginning, click the ‘Cancel’ button. Then right click on the file you were downloading that got interrupted and select the ‘Refresh download address’ option.
A dialog box which says “IDM will open a web page in your browser where it captures this download. Please start the download of the same file from your browser again, and IDM will try to capture a new address or new session data to resume this download”, then click ok and wait for your IDM to try and capture new address or session data for the file to resume the download.
Another smaller dialog box with “Stop waiting” button will appear while a tab opens on your browser to locate the file’s new address.
Once a new link has been found, IDM will immediately resume your download.
Now your download will resume to completion. I hope with this tutorial you can never restart another download again, it is easier to obtain a new address and resume your download.