Make the Network Location a trusted location..
To add a file to a trusted location, please perform the following steps after choosing to open the file.
1. Click on the ‘File’ tab at the Left-Top corner and select Options from the menu list.
2. In the following window ‘Access Options’; select the option ‘Trust Center’ at the very end of list; and click the Trust Center Settings…
3.You will face another window that has a list of options; select ‘Trusted Locations’.
4. Use the ‘Browse’ button to look for the location of the placed File.
5. Click OK, and the location will be trusted. Click OK again to exit the Trust Center and OK to exit the Access Options.
6. In order for the changes to take effect the Access should be closed and reopened.