This error occurs when you are saving an Access Database after using the default document name. To resolve this issue, create a new access database with a unique name, often we prepend the name with the users username. Having a unique name will prevent this error.
Article ID: 563
Created On: Mon, Apr 6, 2015 at 3:28 PM
Last Updated On: Mon, Apr 29, 2019 at 7:33 AM
Online URL: https://kb.mc3.edu/article/office-365-access-database-already-in-use-error-when-saving-database-563.html