Adobe Reader locks up my Outlook email program when I email out of Adobe

I email a document out of Adobe Reader and it freezes my Outlook program.  Outlook is my default email.   Often times when I send an email out of Adobe using my default Outlook email, after I send, it freezes my outlook, so I go into Acrobat reader and close the tab with the document I sent, and that unfreezes Outlook sometimes.   When outlook freezes, nothing works except to do a restart, and I get a message that the outlook app is running in the background and is shutting down but it never shuts down, just sits there, and when I check Task Manager, Outlook is not running.