Embedded Youtube Block Thumbnail I seem to be having an issue with the auto generated Thumbnail of a you tube video that shows in a block as a teaser on my frontpage.

When viewing the front page using Firefox the thumbnails are shown. But when viewing on IE11 I just get the alternative text description without the thumbnail.

I am using Drupal 7
Try using the /watch?v= parameter (i.e. www.youtube.com/watch?v=Y9eXzmVzDR8) instead of www.youtube.com/embed/Y9eXzmVzDR8 when adding content to the field.