How to Fix QuickBooks Error Message: Connection Has Been Lost

Quickbooks Errors Solution

ummary: Problem in Internet settings, incorrect folder permissions, or firewall configuration are a few reasons that may prevent you from accessing a QuickBooks® Company File. This leads to QuickBooks Error ‘Connection has been Lost’. Read the blog to check out some quick hacks to fix the QB error.

Quick Fix: Use Stellar Repair for QuickBooks® Software to repair severely corrupt or damaged QBW file and recover all its components in just a few simple steps. The software serves as a comprehensive solution to fix different types of errors in QuickBooks® data file like Error 6150, Error 6147, 6000-305, Error H202, etc. It supports repairing QuickBooks® files in all QuickBooks® versions, from 2007 till 2020.

Any problem or difficulty in accessing a QuickBooks® Company File (QBW), while opening or using that file on QB desktop, may result in the following error:

The connection to the company file has been lost. QuickBooks must close immediately. Any unsaved data will need to be re-entered.


Possible Reasons behind QuickBooks Error ‘Connection has been Lost’

  • QuickBooks is not up-to-date
  • Network connectivity issue
  • The folder, where the QBW file is saved, needs additional permission
  • Anti-Virus or firewall is interfering with QB
  • Power saving options are enabled
  • Company file is damaged (corrupted)

Read this: QuickBooks Company File Repair  All There is to Know

How to Resolve the QuickBooks ‘Connection has been Lost’ Error?

Here are some simple hacks that may help fix QuickBooks® ‘connection to the company file has been lost’ error:

Note: Before attempting these hacks, try restarting the Database Server Manager or moving the company file to a different folder to fix the error.

1.     Verify if QuickBooks® is Updated

QuickBooks releases updates and version upgrades. Press F2 key when QuickBooks is open on the system and check the version on the Product information window. If the software version is not up-to-date, update your QB software to the latest available version.

TIP: Once you’ve the latest software, you must also upgrade your company file so that the file can work with the new version of QuickBooks® Desktop.

2.     Restart QuickBooks®

Sometimes closing and opening the QBW file may help in solving the connectivity issue, particularly in the case of an application update.

3.     Restart your System

Note: If your system is connected to a network and you are trying to access a company file stored on another computer, make sure no one else is connected to the network before you initiate the restart process.

An application update won’t run or properly function until you restart the system. Thus, restart the system on which the QuickBooks® company file is installed and check if it resolves the issue.

4.     Test Network Connectivity

If you have stored the QBW file on another computer (the one that hosts the file), check if that computer is still connected over the network.

An effective way to test network connectivity is to try opening or to save another file on the host computer. If you’re unable to open the file, you need to set up Windows access permissions required for QB.

Note: QB does not support Wireless networking, as it is not reliable for sharing information such as the company file.

5.     Check if Portable Device is Connected

If you have saved your company file in a portable storage device (such as a USB drive, flash drive, or thumb drive), make sure the device is still connected. For this, try to:

  • Disconnect and reconnect the drive.
  • Look for QBW file on your removable drive.
  • Save another file to your drive to verify it’s working.

Also, make sure that your drive has enough free space size to store your QuickBooks company file.

6.     Turn off Power Management Settings on the Server

  • On the computer, which holds the company file, open the power management settings from the Windows Control Panel. To do so, perform the following:
  • Press the Windows key, and type Power Options.
  • Select Power Options from the search results.
  • Disable the ‘sleep’, ‘standby’, and ‘hibernation’ modes on the host computer.

TIP: For detailed information about Power Options, refer to the Windows Help and Support manual.

7.   Download the QuickBooks® Tool Hub and run QuickBooks® File Doctor

If the error persists, useQuickBooks® Tool Hub to resolve the issue. QB Tool Hub includes several tools that can help fix common QuickBooks desktop errors. Once you’ve installed the QB Tool Hub, open it and run the QuickBooks File Doctor tool. File Doctor is a built-in repair utility that can help you recover damaged company files.

Be wary, though, as the File Doctor tool has certain limitations. It does not work with QB version lower than 2016. It only helps fix errors in the Company file and may fail to repair other QuickBooks® data files. Also, running this tool often results in File Doctor has stopped responding error.

8.     Use a Reliable QuickBooks® Repair Software

You can overcome the limitations of the File Doctor tool with the help of a QuickBooks® repair software such as Stellar Repair for QuickBooks® Software. It not only repairs the company file, but it also helps resolve all errors in a QBW file. Also, it can save the QuickBooks® data from further corruption.

How is Stellar Repair for QuickBooks® Software better than the built-in File Doctor Tool?

The supports all versions of QuickBooks®, while File Doctor provides a repair solution for QB2016 and later releases only.

The software repairs all components of the QB data files, including Company, Customers, Vendors, and Employees, and extracts the entire data. In contrast, File Doctor resolves errors in Company files only.

QuickBooks Repair software from Stellar® also recovers the entire data from the corrupt backup files. Thus, it can also help in resolving corruption errors associated with backup files.

The software works on QuickBooks file of any size (no size limitation) while File Doctor can work on Company Files only up to 2GB.

QB repair software works with consistent efficiency on all QuickBooks versions. Too many QuickBooks versions on the same computer create confusion for the built-in QuickBooks Desktop File Doctor.

Quick Comparison between File Doctor and Software Based Repair Solution

Quick Comparison between File Doctor and Software Based Repair Solution

Precautions to Avoid QuickBooks Error “Connection has been Lost”

Once the issue is resolved, make sure to follow the preventive measures listed below to avoid the error from occurring again:

  • Check and update QuickBooks regularly.
  • Only the Administrator should be involved in upgrading the QuickBooks company file. Check System compatibility to launch the upgrades successfully.  
  • Do not open the Company file in the previous version after the software update. 
  • Do not open the Pro/Premier account Company Files
  • The Enterprise Company files work only in QuickBooks Desktop – Enterprise edition
  • Convert all files on the local system only. To do so:
  • Log-off all users from QuickBooks app
  • Copy the file from a server location to the local system
  • Try to rebuild the Company file on the local network and create a backup at the specified location, in case there is a need to restore the QuickBooks Company file.


We have covered some quick and simple hacks to fix QuickBooks Error “Connection has been Lost” in this blog. If you suspect that the error has occurred due to damaged (corrupted) QuickBooks® company file (QBW), try the QB File Doctor tool to repair the QBW file. If the built-in repair tool fails to fix the file, using a Stellar Repair for QuickBooks® Software may come in handy. Check out the comprehensive analysis of QuickBooks built-in repair utility (File Doctor) versus software-based repair solution covered in the blog to understand which method can help you fix the QB error. 

QuickBooks Connection Has Been Lost (Only For Single-User Mode Users)

While working with the company file you may encounter QuickBooks Connection Has Been Lost issue. This error usually occurs when opening or working with QuickBooks desktop.

It will look as:
The connection to the company file has been lost. QuickBooks must close immediately. Any unsaved data will need to be re-entered.

In this post, we’ll discuss its causes and solution steps to fix it.

Important: This post will only be applicable for the QuickBooks single-user mode. We’ll update this post soon for multi-user mode users as well.

Causes of error QuickBooks Connection Has Been Lost

  • Anti-virus is blocking QuickBooks desktop
  • QuickBooks company file may be corrupted
  • A folder where the company file is saved need some additional permission

Things to do before proceeding further with the troubleshooting steps

A. Update QuickBooks Desktop

  • Open QuickBooks Desktop
  • Then go to Help > Update QuickBooks Desktop
  • Then click on Update Now to the top right corner
  • Click Get Updates
  • Once Update is complete, close QuickBooks

B. Create a Company File Backup

  • Open QuickBooks
  • Go to File > Back Up Company > Create Local Backup
  • Now follow onscreen instructions to create a company file backup

Quick Note: Process to fix this problem may be complicated, you can speak with an expert for a quick resolution or leave us your message.

5 Steps to Fix QuickBooks Connection Has Been Lost

Step 1: Restart QuickBooks Desktop

After restarting the QuickBooks, if the same problem still exists please proceed further with the further steps.

Step 2: Download and Run Quick Fix my Program

  • Download QuickBooks Tool Hub and go to your download by pressing CTRL+J
  • Under your downloads list click on QuickBooksToolsHub.exe
  • Click Yes to allow this app to make changes
  • Now click on Next to install it and then click Yes again for accepting the license agreement
  • Click on Next and then Install (It may take some time)
  • Once the installation is complete click on Finish
  • Now open QuickBooks Tool Hub (Icon will be available on your desktop)
  • Go to Program Problems tab and click on the Quick Fix my Program
  • It may take some time and then restart your computer
QuickBooks Connection Has Been Lost

Step 3: Download and Run QuickBooks File Doctor

  • Download QuickBooks Tools Hub and go to your downloads by pressing CTRL+J
  • Under your downloads list click on QuickBooksToolsHub.exe
  • Click Yes to allow this app to make changes
  • Now click on Next to install it and then click Yes again for accepting the license agreement
  • Click on Next and then Install (It may take some time)
  • Once the installation is complete click on Finish
  • Now open QuickBooks Tool Hub (Icon will be available on your desktop)
  • Under Company File Issues tab click on Run QuickBooks File Doctor

Step 4: If your QuickBooks company file is saved on a portable drive

Your Company file must be saved on the local drive. Using the company file with a portable drive such as USB etc. is not a recommended way.

  • Make sure the USB drive is connected properly
  • Disconnect and reconnect the drive
  • Save other files(.txt, .docx) in the USB drive to see if it’s working fine
  • Ensure that the available space of the USB drive is as much as your company file size.

Step 5: Move the Company File to a different location

  • Create a new folder on the desktop and save as QBTEST
  • Go to the location where the company file is saved.
  • Then make a right-click on the company file and click Copy(Ctrl+C)
  • Now go back to the QBTEST folder and make a right-click on it and select Paste(Ctrl+V)
  • Press & hold Ctrl+Sift keys and then open QuickBooks desktop. Don’t release the keys until No Company Open window comes up
  • Then click on Open or restore an existing company
  • Select Open a company file and click Next
  • Now browser to QBTEST folder on the desktop to open the company file

After following all the above steps you’ll no longer face Error: Connection Has Been Lost but incases if it still exists, please speak with our experts or leave us your message.

ERROR: QuickBooks Connection has been Lost [FIXED]

QuickBooks software tries to keep up with the user demands and ensures a smooth experience of working with complex business data. For the same purpose QuickBooks needs regular updates, but updating the software is not same as upgrading it. Updating is moving the software to a new edition, but on the other hand, when you upgrade the earlier version to the current one, it requires the assortment of the Network share, user-system and Server OS. The complete upgrade process needs a proper procedure, and many times users have reported the QuickBooks Connection has been Lost issue. In this blog, we walk you through the steps to get the QuickBooks Connection has been Lost abort fixed with easy steps.

Looking for a Support with QuickBooks Connection Errors? Call Number (844)-888-4666 Now

Preventive steps for QuickBooks Network Connection Failure

  1. It is essential to check for latest QuickBooks update. To check for the current version of your QuickBooks application, press F2 while being in QuickBooks and you can see the current version of your QuickBooks Desktop under the Product Information window.
  2. You must be logged in as an administrator to complete the update and make sure that your computer system meets the minimum system requirement to run QuickBooks or you might get the connection has been lost error message.
  3. An older version of QuickBooks Desktop cannot open the company file created by a later one so make sure that the company file that you are opening is compatible with your QuickBooks Desktop.
  4. Try to rebuild the company file on the local network and create a backup at the specified locations.
  5. Convert all company files on the local computer.
  6. It is important to note that the enterprise company files work only on QB Enterprise edition.
    QuickBooks connection has been lost abort QuickBooks Network Connection Failure

How to Tackle the “QuickBooks Connection to Server has been Lost” Error

Restart QuickBooks:

The most simple quick fix to “QuickBooks Connection to Server has been Lost” error is sometimes just simply closing and opening the QuickBooks.

Restart the system:

Sometimes the application update does not come to effect until you restart the computer. So make sure to restart the Windows after installing the updates.

Fix QuickBooks Connection has been Lost error with QuickBooks File Doctor:

QuickBooks File Doctor is a simple, user-friendly file repairing tool that finds the file issue, and fixes it before it leads to massive data corruption.

If restarting the computer does not work to resolve “QuickBooks Connection to Server has been Lost” error, the obvious option is the QFD tool which is developed to resolve QuickBooks related issues without any external help. But, the tool is available only for QuickBooks 2016 and later versions. QuickBooks File Doctor only repairs Company File and network related errors on Windows computers.

Host Multi-user Access:

Make sure that your server is running in Multi-User mode and workstation in Single-User mode.

  1. On the workstations apart from the hosting computer, click on File menu and select Utilities.
  2. Check if Host Multi-User Access is present on the list.
  3. The workstations that display Stop Hosting Multi-User Access, click on it to disable it.
Check the Portable drive:
  1. Make sure to properly insert the removable device, You may try:
  2. Disconnecting and reconnecting your drive.
  3. Finding your QuickBooks company file on your removable drive from My Computer.
  4. Saving other files to your drive to make sure that it’s working.
  5. Make sure your drive has enough available space. It must at least have free space double the size of your company file.
Check your network
  1. Open or save another company file on the server to see if you have the necessary access.
  2. Create and delete Microsoft Excel or WordPad file present on that computer.
  3. If you’re unable to create and delete a non-QuickBooks file in that folder then, Set up Windows access permissions required for QuickBooks
  4. Check if the helps resolving QuickBooks lost connection error.

The above solutions for the error “QuickBooks Connection has been Lost” must be enough to get it resolved. But, there might be certain steps that will require technical assistance available through Support Number +1-888-300-3913.

How to Fix QuickBooks Error Message: Connection Has Been Lost?

Here is how you can fix connection to QuickBooks company file is lost issue:

Came across an annoying pop up message stating as “The connection to the company file has been lost. QuickBooks must close immediately. Any unsaved data will need to be re-entered” and don’t know how to deal with it? Well, there can be numerous underlying reasons causing connection issues. Often while working with the company file, such errors abruptly appear and hinder the entire working process. A difficulty in accessing the company file might lead to such kind of error. Also, in case the system turns to sleep mode, then the user can end up in this error. Or if the internal network card of a system is also set to go into the sleep mode after a certain period of time, then it might lead to the lost connection issue. In today’s post, we are going to discuss in detail the causes and fixes to this annoying error.

At the time when you are trying to access the company file you may see the following error message on your screen:

Connection Has Been Lost

The connection to the company file has been lost. QuickBooks must close immediately. Any unsaved data will need to be re-entered.

Thus, make sure that you stay tuned with this post till the end. Or if you are in search of a QuickBooks professional or a team who can assist you in the process of getting rid of any such error, then here we are. Give us a call at 1-800-761-1787 and our QuickBooks enterprise support team will be there at your rescue.

You may also read: Troubleshooting steps for QuickBooks error 1935

Brief into QuickBooks connection lost error?

Error Message - Connection has been lost - Screenshot

The error name itself indicates what this error is about. It is basically an error that appears when the software loses the connection to the company file. This might end up in closing the software immediately. Moreover, if the data is unsaved, then it might not be recovered and the user might have to re-enter it. This indicates that the software will not be able to access the company file any longer or a particular section of the company file. This issue is similar to Abort error, where the software is unable to change or proceed to the company file in the mid of the process. This also damages the QBWUSER.INI file. There can be various factors causing this issue, which will be discussed later in this article. So, make sure to read further!

What Causes Error message: Connection Has Been Lost?

  • This error can be caused if the company file is stored on another system or on a portable drive and connection the storage device was disrupted
  • Another factor causing the issue can be if the power management settings in windows activated the sleep or hibernation mode on the system having the company file
  • The user can also face such issue if more than one system on a network is configured to host the QuickBooks company file
  • In case the systems in a multi-user installation are running different versions of QuickBooks
  • Or if the data in the company file gets damaged somehow

If you use a standalone system

There can be a couple of factors causing this issue, out of which we have enlisted some of the common ones below:

  • Any antivirus blocking the QuickBooks desktop
  • Or if the QuickBooks company file got corrupted
  • The user might also face certain issue if the folder where the company file is saved requires some additional permission

Quick tips before troubleshooting the error

Before you jump on to the detailed procedures to get rid of the QuickBooks connection lost issue, here we have a few of the quick tips that could help you to get rid of the error with ease:

  • The user can restart the QB database server manager
  • Moving the file to a different folder
  • Setting power saving option to never

In case the user is making use of just one computer, then he/she can carry out the below steps:

  • The folder where the company file is stored, might require additional permission
  • Or any 3rd party software like antivirus might contradict with QuickBooks accounting software
  • In case the QuickBooks company file itself is corrupt

Signs and Symptoms of connection lost error in QuickBooks

In order to identify the error, the below signs and symptoms would work:

  • In case the QuickBooks software shows the error while opening or is shutting down often with unrecoverable QuickBooks error, then this error is probable to happen
  • Moreover, if the system is being shut down frequently without receiving any error message
  • Or the user witnesses the software getting terminated from windows 8
  • If the software suddenly stops working and an error message pops up on the screen
  • Another sign can be if the system is randomly crashing

Read Also: Fix error 401 in QuickBooks Desktop

Methods to fix the connection has been lost error in QuickBooks

There can be a couple of methods that can be adopted to troubleshooting of the QuickBooks connection lost error. However, for best results, it is recommended to follow the solutions in the prescribed order. So, let us have a look at the methods one by one:

Method 1: Restarting your system and QuickBooks desktop

Restart your PC - Screenshot

Many times, a mere reboot can work in resolving the issue. Thus, before implementing huge and tedious solutions, we would recommend the user to start with restarting the software and check if the error rectifies with this simple process.

Method 2: Running the quick fix my program from the QuickBooks hub

The QuickBooks tool hub is a great tool in fixing various QuickBooks related errors. In order to make use of this tool, the user will have to turn off the QB software. The steps involved in this process are as follows:

Step 1: Downloading and installing QuickBooks tool hub

  • First of all, close QuickBooks
  • And then download the QuickBooks tool hub program. The user is supposed to save the file where it can be accessed without any issue
  • The next step is to open the file downloaded in the above step
  • And then carry out the onscreen prompts and complete the installation process. Also, make sure to agree to the terms and conditions
  • After the install finishes, make sure to double click the icon on the windows desktop to open the tool hub
QuickBooks Tool Hub - Logo

In case the user is unable to spot the icon, browsing for the same can be a quick fix to it.

QuickBooks Tool Hub - Screenshot

Step 2: Running QuickBooks file doctor from QuickBooks Tools hub

Now that you have downloaded the QuickBooks tool hub, you can easily access the QuickBooks file doctor tool

For the ones whose company file is stored on a portable drive, the below steps are applicable:

The company file should be stores on the local drive, and working on the company file till the time it is sitting in a portable drive, such as a flash drive is not recommended. The user can proceed with the steps knowing the risk:

Checking the portable drive

  • The user is supposed to ensure that the portable drive is connected. Or you can make an attempt to:
    • Disconnect and reconnect it
    • Spotting the QuickBooks company file on the removable drive from My computer
    • Or saving other files to the drive to ensure that it continues to work
  • The user is also required to ensure that the drive has plenty of available space. The drive should have at least the space equals to the size of the company file.

In case the system is connected to a network and the data file stored on another system:

  • The network connection might be unstable
  • Folder having the file is saved might need additional permission
  • Firewall is preventing the access over the network
  • Power saving mode is turned on

The network can be broken in several ways:

  • The user might have seen a windows error or similar problem on the system
  • The server or the host might have a similar issue
  • Or there might some issue in the connection of the systems

Read Also: What is QuickBooks connection diagnostic tool?

Method 3: Checking the network

It should be noted that the wireless networking is not supported by QuickBooks and is not reliable for information like the company file:

  • The user needs to open or save another file on the server to ensure that have the necessary access
    • The user needs to create and delete Microsoft excel or wordpad file on that system
  • In case the user is unable to create and delete a non-QuickBooks file in that folder. The user needs to set up windows access permissions required for QuickBooks

Another point that the user should note is that if the network isn’t working or if the user is uncomfortable carrying out the steps, then consulting a professional is recommended.

Method 4: Disabling the power management settings on the server

Another method if to disable the power management settings on the server. The steps involved in this process are as follows:

  • On the system where the company file is stored, the user needs to open the power management settings in the windows control panel
    • Press windows key
    • And then type power options, and then select the power options from the results
  • The user needs to turn off all sleep, standby, and hibernation modes on the host system. The user needs to refer to windows help and support for any further information about power options.

Read this also: Fix QuickBooks Validation code issues

Method 5: Fixing the hosting on all systems

Hosting system tasks:

In case the QuickBooks is installed on the host system, the steps below should be followed:

  1. The user needs to first open QuickBooks
  2. And then select file and utilities option
    • In case the user finds the stop hosting multi-user access in the menu, then hosting is enabled, and the user can proceed to the next step
Stop Hosting Multi-User Access - Screenshot
  1. In case the host multi-user access is seen, then select it to enable hosting on this system and then move to the steps ahead.
Hosting Multi-user Access-in QuickBooks - Screenshot

If QuickBooks is installed on the host system:

  • For this, the user needs to double click the QuickBooks database server manager icon in the windows system tray. (The user needs to select Start > all programs > QuickBooks > QuickBooks database server manager)
  • After that, the user needs to click the database server tab
  • Also, the user needs to verify that the company file is visible in the window below currently connected company files and logged in users. In case it is not, then the user needs to click the scan folders tab and then click on help for the information about adding the company file
Scan Folders - QuickBooks database Server manager
  • The last step is to close the database server manager window.

Method 6: Removing and re-creating the .nd file

Intuit QuickBooks Database Server Manager (GIF Image) - Screenshot

The user needs to scan the folder where the company file is situated to create the network descriptor file. The .nd file stores information about the system that is hosting the file. The steps involved in this process are as follows:

  • The very first step is to press windows and then type QuickBooks database server manager
  • And then choose the QuickBooks database server manager and then click on the add folder option and spot the folders storing the company files
  • The next step is to click on scan after the folders are added
  • Now, the data files appear under QuickBooks company file and then hit close
  • To end the process, the user needs to browse to the folders containing the company files and make sure that the file .band was created for each company data file

The point too be noted here is that if the user is unable to spot the database server manager in the programs list, then it is recommended to uninstall QuickBooks and reinstall selecting the second option.

Workstation tasks

  • The user needs to ensure that the hosting is turned off
    • For this, the user needs to open QuickBooks
    • And then select file and utilities tab
      • If the stop hosting multi-user access appears, then select it to disable hosting on the system
      • In case of host multi-user access appears in the menu, the hosting is already disabled and move ahead
  • After that, open the company file using a UNC path
  • UNC is basically a common syntax windows uses to describe the location of a network resource. The user can open the company using the UNC path by carrying out the below steps:
    • First of all, open QuickBooks
    • And then select file and open or restore company
    • The next step is to select open a company file and then click on next
    • After that click on my network places
    • And then double click entire network and navigate to the location on the server
    • And lastly, select the company file and hit open

The user is recommended to ensure that he/she is connected to the network using wired connection configure firewall and then add QuickBooks firewall ports set up folder permissions to share the company files.

See Also: Methods to resolve QuickBooks Error Code 6094


In this post, we have tried to cover all the aspects related to the QuickBooks connection has been lost error. Carrying out any of the methods that we have discussed above might be of great help in getting rid of this annoying error. However, if any information is missed out or if any of your queries remained unanswered, then feel free to contact our industries best accounting professionals via our toll-free number i.e. 1-800-761-1787. You can ask our QuickBooks error support team to fix the error on your behalf.

We work round the clock to provide the best possible support services to the users across the globe. Thus, feel free to call us anytime, and our experts will there to assist you. Give us a call anytime, and leave the rest on us!


Quickbooks displays the following error message:

“Quickbooks Connection has been Lost”. Connection Has Been Lost: The connection to the company file has been lost. QuickBooks must close immediately. Any unsaved data will need to be re-entered.

Error Description

This error indicates that QuickBooks can no longer access your data file or a section of your data file. There are several possible causes of the error. First, you may want to try and restart your computer and your database server to see if this resolves the error. If that doesn’t work, make sure QuickBooks is configured properly and the computer that hosts the data file is working properly.

Also Read :- Upgrade or Convert Your Company File to a New QuickBooks Desktop Version

Leave a Reply

Your email address will not be published. Required fields are marked *