Use the search in Windows 10 and type in “regedit.exe”;
Allow Microsoft Windows Registry Editor to make changes to your system;
Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Access\Security\Trusted Locations;
Add a DWORD by right clicking the Trusted Locations directory, selecting New > DWORD (32-bit) Value [or 64 bit QWORD as required];
Change the name of the DWORD to “AllowNetworkLocations”;
Right click and modify the DWORD using “1” as the value;
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 the new Key and select New > Expandable String Value (for runtime 2013, just String Value for earlier version);
Change the name of this file to “Path” and then right-click and modify… the Value Data to the path or network name required (ie “Z:\” or “\servername” );
To include sub directories as trusted locations, add a DWORD by right clicking the new key, selecting New > DWORD (32-bit) Value [or 64 bit QWORD as required];
Change the name of this DWORD to “AllowSubfolders” and right click and modify… the DWORD using “1” as the value;
