While resuming downloads sometimes you may encounter an error
'download session has been expired'.
This error occures when the download link is valid for a limited amount
of time.
To resume such downloads you will need to find a new download link that
will point to that same file which was being downloaded.
Goto XDM Menu->Refresh Link.
It will open the Refresh Link dialog.
If XDM knows the webpage from which the download was captured it will be displayed, otherwise you will have to find that webpage manually.
Open that webpage and find the download link which points to the
same file which was being downloaded (e.g. file size is same).
If it is a video you can find the link using XDM Media Grabber.
If it was a YouTube video, captured by XDM YouTube Downloader, then
repete the steps you performed last time to get the direct download
link.
Paste the new link in 'New Download Link' textbox and click OK.
Resume the download.
NOTE: If the new download link does not points to the same file which was being downloaded (filesize is not same) then XDM will throw an error or will result to a corrupted download.