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QuickBooks error 80040408 is an issue that arises when the software is unable to establish a connection with the company file located on a remote server or computer. This error often occurs when attempting to access QuickBooks in multi-user mode. It can be frustrating as it disrupts collaboration and data sharing among users.

The error may result from issues related to network configurations, firewall settings, or problems with the server hosting the company file. To resolve this error, it's crucial to ensure that the network and firewall settings are correctly configured, and the server is operational. Verifying that the QuickBooks Database Server Manager is installed and running on the server can also help address this issue. Make sure to speak with our team of professionals at 855 – 738 – 0359 so they can help you with fixing the problem.

List of causes for QuickBooks error 80040408 that can trigger the problem

Make sure you check the causes listed below so that it will be helpful to pick the solution accordingly. We have listed below a few of them for you.

  • Incorrect network settings can disrupt communication between QuickBooks and the company file.
  • Overly strict firewall settings can block QuickBooks access.
  • Issues with the server hosting the company file can lead to errors.
  • A shaky network connection can cause disruptions in data access.
  • Not being installed or not running correctly can trigger this error.
  • Running an outdated version can result in compatibility problems.
  • Data file corruption can cause errors when opening or accessing files.
  • Incorrect user configurations may lead to access problems.
  • Conflicts with other applications can disrupt QuickBooks functionality.

You can simply resolve the problem of 80040408 using this solution and it is an easy one

Solution: Try to turn off the QB Quick Start on your device

By turning off Quick Start, you may resolve the error 80040408, as it can prevent issues related to multi-user mode and data access. Make sure to check your network and firewall settings as well if the issue persists.

  • Open QuickBooks and ensure you have the company file closed. Click on the “Edit” menu (or “File” menu in older versions).
  • Select “Preferences.” In the Preferences window, click on “General” on the left side.
  • After this, you will have to head to the “My Preferences” option tab in the menu and then, find the “Keep QuickBooks running for quick startups” option in the list. 
  • Post this, you will have to simply Uncheck the box that will be next to this option so as to turn off the Quick Start of your QuickBooks on the device.
  • Click “OK” to save the changes. Close and restart QuickBooks.


QuickBooks error 80040408 is an impediment to efficient multi-user collaboration in QuickBooks. Resolving it involves checking network configurations, and firewall settings, and ensuring the server's functionality. Timely updates and maintenance are essential for preventing connectivity issues and maintaining smooth operations within the software. If you are unable to fix the problem, you can simply call us at (855)-738-0359.

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