Change the name of this DWORD to "AllowSubfolders" and right click and modify.To include sub directories as trusted locations, add a DWORD by right clicking the new key, selecting New > DWORD (32-bit) Value.the Value Data to the path or network name required (ie "Z:\" or "\servername" ) Change the name of this file to "Path" and then right-click and modify.Right click the new Key and select New > Expandable String Value (for runtime 2013, just String Value for earlier version).Now add a new KEY to the Trusted Locations directory by right clicking the directory and selecting New > Key (You can rename this to something meaningful).Right click and modify the DWORD using "1" as the value.Change the name of the DWORD to "AllowNetworkLocations".Add a DWORD by right clicking the Trusted Locations directory, selecting New > DWORD (32-bit) Value.
Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Access\Security\Trusted Locations.
Allow Microsoft Windows Registry Editor to make changes to your system.Double-click the AccessRuntime.exe file on your hard disk to start the Setup program. Download the file by clicking Download and saving the file to your hard disk.