Preventive measures for QuickBooks Connection Has Been Lost issue QuickBooks Database Server Manager plays a major role in connecting the server and workstations when the data file is shared. QuickBooks Connection Has Been Lost error message appears when DBSM fails to start or crashes randomly in the background. If you also face problems hosting or opening a data file due to this issue, give this blog a read till the end to acknowledge the reasons and usable methods to eliminate the error. Approach our team of QB experts at 1.855.738.2784 for troubleshooting directions to counter the error. Here’s why QuickBooks connection to server has been lost message appears? You’ll mainly run into this error message while opening a company file located on the server or running the Database Server Manager. The conditions that can possibly trigger this DBSM issue are discussed below• The Network Descriptor or Transaction Log file fails to run when you host the data file on a multi-user network. • QuickBooks cannot connect to the company file due to a lack of folder permissions or Windows Firewall restrictions. • The company file is damaged and QB fails to process it due to its unsupported/unreadable format. Perfect methods to tackle the QB connection loss issue You won’t be able to use the company file efficiently until you resolve the internal issues in the Database Server Manager. You must apply the following techniques to ensure the QB error message doesn’t appear again- Solution 1- Launch DBSM after mending the damaged .TLG and .ND files The transaction log (.tlg) and Network Descriptor (.nd) are QB program files containing recent transactions and the path to the data source, respectively. These files are processed in DBSM when you try setting up a multi-user network to host the QB Desktop file. In case the files get damaged and do not run, DBSM instantly develops issues and the multi-user network breaks down. You need to fix both files and register them on the network to ensure you don’t fall prey to the company file issue again. Here’s how1. Open your QB folder using a file explorer and look for .nd & .tlg files inside the folder. 2. Right-click both files individually and select the Rename option in the list. 3. Add ‘.old’ as an extension to both the files (.nd & .tlg) and save them on your system. 4. Launch the DBSM and navigate to the Scan Folders 5. Provide the location of your company file folder and click the Start Scan 6. Wait for the scan to complete and retry opening the data file in QBDT. If the error message appears again after fixing the DBSM issues, check out the next solution. Solution 2- Mend your company file before opening it in QB You can also encounter this error message if the company file gets damaged and fails to run on your QB. You can use the QB tool hub to tackle the situation as shown in the following steps1. Open the QB tool hub and go to the Company file issues 2. Click the Quick Fix My File option and wait until your data file is completely fixed. Conclusion This is the completion of our blog aiming to share the causes of the QuickBooks Connection Has Been Lost error message coming up while opening a data file. The methods to get rid of the problem are also present in the blog and we hope you use them to host or open the data file conveniently. Speak to our QB support team at 1.855.738.2784 to resolve your queries about the error.