I have an app developed in access 2003 and now converted into access 2013 running as .accde.
When I install on other PC's I initially get this message
This data is unreconized format
The Database may have been created with a later version of Microsoft Access then the one your are using. Upgrade your version of Microsoft Access to the current one, Than this Database
To get over this I recompile on the other PC's in .accde and it then works ok.
My PC has windows 8 64 bit and Office 2013 32bit Professional edition.
The problem PC's have windows 8 64bit and Office 365 32bit Professional edition
The only difference is 365. My PC doesn't have 365 installed.