I have Access 2010 on one machine, 2016 on the other, the same accdb.accdb database.

Machine 1:

Win7pro; 64. On the 2016 Access machine I open the db and can edit all tables, all forms are non-erred, etc. I have linked tables to a db I can edit fine in either machine, in the source db (but not in the accdb.accdb db). Both machines, apparently, have all the same security to allow everyone to full control, read write (as a test), so the Access 2016 machine is acting normal.

My dilemma is this:

Machine 2:

Win7 home, sp1; 64; On the 2010 machine, same accdb.accdb, linked tables open as "read only" (but nothing is set to read only anywhere in the system, and it errors only when I try to write to the tables manually or by VBA) when it is the same set up on both machines, trusted locations the same, total permissions for everyone at system level, logged in as The Administrator.

Yet the same database file gives me read-only errors in machine-Access-2010. But I can edit in the source db, but not in accdb.accdb that links those tables from the editable source. They use linked tables from a network path which seems to be identical in permissions on both machines, and the accdb.accdb file is an exact copy.

Both machines are identical as far as I have investigated, other than Access 2010 and 2016.

Anyone know what is causing this?