title: Split MS Access database - can't open backend - potential security concern
body: <p>I have developed a database in MS Access 365, created all the tables and objects, and successfully split the database (using the wizard) into a front- and back-end.</p>
  <p>The front-end opens and runs fine.</p>
  <p>However, I can't open the back-end to make design changes. The error I get is:</p>
  <p><a href="https://i.stack.imgur.com/ZFPU6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZFPU6.png" alt="security notice" /></a></p>
  
  <p>I've search and read about creating a digital signature, tried to create one locally, &quot;sign and package&quot; the database before splitting, but nothing has worked yet.</p>
  <p>Does anyone know how to get this to work so I can open the back-end database file?</p>