السلام عليكم ورحمة الله وبركاته  الحمد لله وحده تم حل المشكلة  وجدت هذا الكلام  2 Missing primary key or timestamp Make sure the SQL-Server table has a primary key as well as a timestamp column. The timestamp column helps Access to determine if the record has been edited since it was last selected. Access does this by inspecting all fields, if no timestamp is available. Maybe this does not work well with null entries if there is no timestamp column (see 3 Null bits issue