What about system wide updates to hardware/Windows 32 bit to 64 bit, or directory structure, or where the db's might have been moved to? This could be a Trusted Locations issue? The fact that there are 3 db's involved makes me think that this isn't a corruption issue. A manual attempt at inserting or modifying a record would be a good place to start as noted. Possibly code or macros that are supposed to be executing the queries won't run because the db's are no longer in a trusted location. Also look all over the Access window, including the status bar, for messages that could provide clues.
Last edited by Micron; 08-29-2018 at 07:14 PM.
Reason: clarification
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.