Would really appreciate help in determining the problem behind a locking error described in the subject line. The error occurs when trying to close one of the forms in the database (which is tied to a table in the database containing almost 21,000 records). A quick resolution is to have the user (named in the message) logout of the database and then the others affected can close the form and log out of the database. <br><br>In hopes of leaving the error behind, I recently recreated the database, imported in the objects, had our network security person re-establish the two security groups we have on all of the objects in the database - an administrative group with 3 users and a data entry group with 8 users, but we are still receiving the error. Any help on this would be greatly appreciated. I'm wondering if the problem may be in the security setup or in the database itself. Thanks in advance for any advice or suggestions!