I had this happen in 2013 when filing my 2012 taxes. Unfortunately it was fraud, someone used my SSN and filed a fraudulent return to get a bogus refund. I had to submit my taxes in the office and file a form informing the IRS of the fraud. It was fine, I got my refund. Now I get a security PIN by mail each year to e-file my taxes. Bummer that you might miss the July 15th deadline as a result though! Hope they won't penalize you for that.
