Connection to the QuickBooks company file has been lost. This error may occur because of quite a few reasons such as a new update being incompatible, a broken company file, misconfigured firewall permissions, etc. There are several ways in which you can approach the solution and we recommend you follow the instructions below one by one until you solve your problem.
Solution 1: Use the QuickBooks File Doctor
This tool is currently only available in UK, USA, and Canada and its purpose is mainly to fix broken company files which have gone corrupt because of a variety of different reasons. This solutions is recommended if you are updating your company file to a new version of QuickBooks.
Solution 2: Reinstall Using a Clean Install
If the error code mentioned above appears when updating your company file to a new version of QuickBooks, the best solution would be to simply reinstall it using a clean install. A clean install is usually done when one of the program’s features are damaged and need repair and also when the usual reinstall fails to provide any comfort or a solution to the problem. In order to start the installation process make sure you havethe setup file you downloaded from QuickBooks’ official site. You will also need your license number before you start.
The next thing in the process is to rename the installation folders so that QuickBooks does not use the remaining files after you reinstall it. This is an easy task. Note: If you are not able to see some of the folders we mention below, you will need to enable the Show Hidden Files and Folders option from within the folder.
C:\ProgramData\Intuit\QuickBooks (year) C:\Users(current user)\AppData\Local\Intuit\QuickBooks (year) C:\Program Files\Intuit\QuickBooks(year) 64-bit version C:\Program Files (x86)\Intuit\QuickBooks (year) Note: You may end up receiving the “Access Denied” error when you try to rename these folders. This only means that one of the QuickBooks processes is running and it prevents you from modifying any of the files and folders these processes are using. Follow the steps below to fix this:
QBDBMgrN.exe QBDBMgr.exe QBCFMonitorService.exe Qbw32.exe Alternative: If the clean uninstall doesn’t work for some reason, you can always try and repair the installation by choosing the Repair option in Step 7 of this Solution. After the process finishes, try to see if the error message still appears. Note: If you are encountering your error when opening your company file on QuickBooks Desktop, you can also try performing a clean install or running the File Doctor as these methods apply for this type of problems as well.
Solution 3: Fixing the Proper Settings Manually by Renaming the .ND and .TLG files
These extensions may sound unknown to you but these files are actually a part of your QuickBooks files. They contain the settings and configuration needed to open the company file in a multi-user environment. When these files go corrupt, you can always expect these errors to occur but you can always rename them. This won’t make you lose your data. In fact, these files will be recreated when you use the QuickBooks Database Server Manager to rescan and when you open your company file.
Solution 4: Setting Proper Folder Permissions
This error can occur even if you don’t possess the proper permissions for the folder where the company files are located. This is easy to solve so first, let’s check if that is the real issue. Traverse Folder/Execute File List Folder/Read Data Read Attributes Read Extended Attributes Create Files/Write Data Create Folders/Append Data Write Attributes Write Extended Attributes Read Permissions C:\Program Data\Intuit\Entitlement Client\v8 C:\Program Data\Intuit\Entitlement Client\v6.0 C:\Program Data\Intuit\Entitlement Client\v5 C:\Program Data\Intuit\Entitlement Client\v3 C:\Program Data\Intuit\Entitlement Client C:\Program Data\Intuit\QuickBooks Enterprise Solutions X.0 (X = version) or C:\Program Data\Intuit\QuickBooks 20XX. C:\Program Data\COMMON FILES\INTUIT C:\Program Data\COMMON FILES\INTUIT\QUICKBOOKS C:\Users\Public\Public Documents\Intuit\QuickBooks\FAMXX (XX = year) C:\Users\Public\Public Documents\Intuit\QuickBooks\Company Files C:\Users\Public\Public Documents\Intuit\QuickBooks\Sample Company Files\QuickBooks Enterprise Solutions X.0 (X = version) or C:\Users\Public\Public Documents\Intuit\QuickBooks\Sample Company Files\QuickBooks 20XX (XX = year)
Solution 5: Move the Company File to a New Location
If the path to your company file gets to long or too complex, it may confuse the software and you should definitely consider changing the location of where you store your files. Having your files on Desktop will test whether it’s the location which is causing these issues.
Solution 6: Check Your Firewall & Anti-virus Ports
The solutions above have referred to the situation where you did everything in a single-user setup. However, if the company file is located on someone else’s computer, you may experience issues with your firewall if it is not adjusted to allow QuickBooks through. Follow the steps below in order to fix this.
QuickBooks Desktop 2018: 8019, 56728, 55378-55382 QuickBooks Desktop 2017: 8019, 56727, 55373-55377 QuickBooks Desktop 2016: 8019, 56726, 55368-55372 QuickBooks Desktop 2015: 8019, 56725, 55363-55367
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