QuickBooks Error 80040408 is an outcome of improper settings and configuration of QuickBooks during a multi-user environment. The error message shows up as Begin Session Error Code: 80040408 couldn't start QuickBooks. Troubleshooting this error may be a tricky process, and a user might fail to resolve this issue even after following all the troubleshooting steps.

Possible Causes behind QuickBooks Error Code 80040408:

Error: 80040408 may result because of multi-faceted technical factors, you'll find within the below-given list:

• When the QuickStart option has enabled in QuickBooks software
• QuickBooks is already getting used within the single-user mode causing QuickBooks Desktop error 80040408
• When the QuickBooks file name has changed and becomes available to a separate file
• When the QuickBooks file has moved from its original location, and also the path of the file has now changed from
• What you set up within the QQube Configuration device
• QuickBooks is open to a particular company file before trying to load multiple company files
• The QuickBooks is unable to run within the multi-user environment because the dedicated network user has logged out
• QuickBooks has currently utilized by a similar QuickBooks QQube user configured to attach to the QuickBooks
• Multiple cases of QQube Synchronizer moving on the server or workstation

Important: Check the points given below before proceeding further with the troubleshooting steps

• Confirm that the QuickBooks Quick Start option has turned off.
• No other user should be utilizing Single User mode.
• Make sure that the server is running.
• Make sure that QuickBooks hasn't set up to open a specific company file avoiding it to open multiple files.
• Ensure that the location of the company file is correct in QuickBooks and you've got not moved your company file to a distinct location on your computer.
• Verify the name that you just have chosen for the company file in QuickBooks matches the name of the company on the file on your computer.

How to Resolve QuickBooks Error 80040408?

After knowing the possible causes of the error, let’s proceed with some general troubleshooting solutions to resolve Intuit QB Error Code 80040408:

Solution 1: close up Quick Start Option

To disable the QuickStart feature in QuickBooks, you require navigating through the general tab and clicking on My Preferences. Now locate Quick Startups and un-check the box against an equivalent. If an equivalent error remains unfixed, try the next troubleshooting solution.

Solution 2: Sign out All Other Users from QuickBooks

QuickBooks error 80040408 may be triggered when another user within the program is performing an administrative task on a remote system. During this case, logging out all the users from the QuickBooks program can resolve the issue.

Solution 3: Modify Settings on QQube Configuration Tool on Window

To get the task done, follow the below-given steps:

• Go to the QQube Configuration Tool window
• Click on Database from under Advanced Options then hit the Show More button
• Now tick the boxes against Synchronizer and Database Manager Options

Note: Attempt to perform an equivalent step giving the error code after applying every single troubleshooting solution then move to subsequent one if the QB Begin Session Failed Error = 80040408 continues.

Solution 4: Change the name of QuickBooks Company File to Its Original One

When the name of the company files is modified, you'll modify the name of your company file, as listed earlier within the QQube Configuration Tool. Alternatively, you'll remove the company file to rename it back to the first. It s impossible to get it done directly from the QQube Configuration Tool. You require having a multi-user version where you'll perform the renaming on the server. Try the succeeding method if unable to open QuickBooks error 80040408 continues troubling you.

Solution 5: Replace the original Path of the File

QB doesn’t Start Error 80040408 may cause because of the change within the company file path when someone moves it from its original location. During this scenario, you have required the different locations of the company file by utilizing the QQube Configuration Tool.

Still, if your issue hasn't resolved then don’t worry this can common as we described earlier at the start of this post that it has complicated to repair this error, and even after applying suggested fixes.