title: Access 365 and accdr file
body: <p>EDIT:</p>
  <p>I have tried 32 and 64 bits accdr and accde files.  They work great on my Office 2016 installation but I still get the &quot;unrecognized format&quot; error.</p>
  <p>Any more clues?  I think I saw that a special switch was needed to start Access 365 in runtime mode.  Does that ring a bell to anyone?</p>
  <p>I have an accdr file that is used by a bunch of clients (non profit orgs).  One of them has Office 365 Business edition and it just won't open the accdr file, giving the &quot;Unrecognized Database Format&quot; error.</p>
  <p>Can that be fixed through a switch in the command line?  Do I need to create the accdb in O365 (it was created in 2016)?  Can O365 be 32 bits?  The accdr was done on an x64 office installation.</p>