title: Excel VBA: Can't find project or library
body: <p>Running Windows 10
  Microsoft Excel 16
  64 bit</p>
  
  <p>Just encountered this issue - Opening a normal file with a small amount of VBA coding. </p>
  
  <p>On opening file today, ran into error "Can't find project or library"</p>
  
  <p>Error appeared in a few files, and after restarting was localized to a single file. </p>