Error 15240: The update did not complete successfully or the file you specified cannot be opened
From the article: The following errors occurs when updating QuickBooks Desktop:
Error 15240: The payroll update did not complete successfully
File Exists: The file you specified cannot be opened. Make sure that it is not being used by another program.
How to fix it
This issue has been resolved in the latest release for QuickBooks Desktop 2014. If updating your QuickBooks Desktop to the latest release does not resolve the issue, try the following workarounds: …and more