What causes the QuickBooks desktop error 80040408?

The error 80040408 can come up if you try to open the QuickBooks startup option, and it is turned on. Having different QuickBooks file names can also result in an error in QuickBooks. This means if the user changes the file name and it no longer matches the old file name. Opening multiple QuickBooks files can cause the QuickBooks desktop error 80040408. If someone else tries to access the software in single-user mode, it can cause an error in your system.

Fixes for the QuickBooks company file error 80040408

Please refer to these solutions and try to fix the QuickBooks company file error 80040408 with the help of easy steps.

Solution 1: Turn off the Quick Start feature in QuickBooks

Head to the general tab and then click on my preferences.

Ensure to untick the QuickBooks running for the quick startup option.

Solution 2: Open the QQube configuration tool

• Tap on the database and then show more tabs.

• See if both the “database and synchronizer manager options” are unchecked. If not, please uncheck it.

• Please move to the other solutions if the above-mentioned solutions cannot fix the error.

Solution 3: Open the QQube configuration tool

• Click on the QuickBooks company list.

• Tap on the change path option. If you cannot find it, locate the button on the right corner of the window.

• Browse and locate the company file on the system now.

Solution 4: Open QuickBooks

• Ensure to open it with no company file selected.

• If a file is already opened in QuickBooks, it will not allow you to open multiple company files. Further, it will start throwing the error.

Solution 5: Logout of all users

• Log out all the users from the QuickBooks account.

• Remotely login into your QuickBooks and check if any other user is performing the tasks.