This security update resolves an issue that was introduced in the October 10, 2017, update. Because of this issue, applications that are based on the Microsoft JET Database Engine (Microsoft Access 2007 and earlier versions, or non-Microsoft applications) fail when you create or open Microsoft Excel .xls files. When the problem occurs, you receive the following error message:
To learn more about the vulnerability that is resolved by the October 10 update, go to CVE-2017-8718.