Have had this Error 2 popping up for the last 3 days. I read many "solutions" and followed many of them, but nothing worked...until now!! I reduced the .pdf file size of my signed 8453. It was originally a bout 15MB, so I did a "save as...reduced size PDF".....reattached it to my return in Turbotax Desktop, and submitted it - it was transmitted instantly.
Thanks!
