If you want to fix this problem and want to disable this blocking feature, then follow these simple steps:ġ. You can’t download the file as all options are disabled. Also if you receive a mail containing any of these file types, Windows Live Mail blocks the file and shows following message at top: Whenever you try to send a mail containing any of these file types, the mail is not delivered. Above are a few frequently used file types which are blocked by Windows Live Mail.