If you are still using the older MDB file format with older ActiveX (OCX) controls.

There maybe other added complications to take into consideration and developers will need to be possibly aware of: Remember, you do not require this run-time if you are creating a web solution as it uses either SharePoint or other Access Services which are controlled by the web hosting servers engine. Microsoft Access 2013 Runtime Now Available You can find more information plus any user comments from Microsoft’s Access blog website. Just in case English is not your native tongue, it’s now available in 38 languages. You can now go and download the Access 2013 Runtime direct from Microsoft or if you prefer, can also find it here with other Access database free stuff too. Over the years (generations from version 95), developers were able to distribute their own custom built Access database applications to users who did not have an Access licence by using the freely available run-time version and now this also includes Microsoft Access 2013.

Microsoft office access 2013