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How to Safely Resolve ‘QuickBooks Connection Has Been Lost’ Error


QuickBooks has always excelled in meeting the needs of its users. No wonder why thousands of businesses use QuickBooks to take care of accounting and bookkeeping activities. Well, just like with other accounting software, QuickBooks is also prone to a number of errors. Nowadays, many users have reported QuickBooks Connection Has Been Lost Error while attempting to open or use QuickBooks. The error abruptly pops up on the screen with an error message, which reads, “ The Connection to the company file has been lost. QuickBooks must close immediately. Any unsaved data will need to be re-entered.”

Generally, QuickBooks Network Connection Failure occurs when the system turns to sleep mode or QuickBooks finds accessing the company file difficult. Considering the complexity of such connection errors, we have come up with this post to discuss in detail the causes and quick fixes to the QuickBooks Connection Has Been Lost Error.

What causes QuickBooks Network Connection Failure?

There can be a number of factors that can cause QuickBooks Network Connection Failure. Some of the most observed ones are as follows:

  1. There might have been some issues with the company file.
  2. The company file is stored on a removable hard drive.
  3. Sleep or hibernation mode has been activated by the Windows power management settings.
  4. More than one system might have configured on the network to host the company file.

What should be done to fix the QuickBooks Connection Has Been Lost Error?

Solution 1) Make use of the QuickBooks File Doctor from the QuickBooks Tool Hub

Note: The File Doctor might take 1-2 minutes to open, and if it doesn’t open, then we suggest you to search for QuickBooks Desktop File Doc and open it manually.

Solution 2) Run Verify and Rebuild Data tools

Note: If you see Your data has failed the integrity check in the result, you are required to rebuild the company file data. Follow the below-mentioned steps to rebuild the data of the company file:

Note: To avoid any risk of data loss, QuickBooks will give you an option to create a backup of the company file. Select OK if you want to do a backup of the company file or choose Cancel to start rebuilding of the company file.

Solution 3) Get the Company file on the local hard drive of the system.

Solution 4) Change Power Management Settings on the server

Solution 5) Fix Hosting settings on all systems

Note: In case the Host Multi-User Access option is available under Utilities, ignore it as it indicates nothing is wrong with that particular workstation.


Hopefully, after following the aforementioned steps in the post, you will be able to get rid of the QuickBooks Connection Has Been Lost Error and continue working with QuickBooks. However, if the connection error persists even after going through all the steps that we have mentioned in this post, then the error might be a result of internet connectivity issues. We suggest you verify you Internet connectivity and see if this resolves the QuickBooks connectivity error.

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