The QuickBooks connection has been lost error is a company file error that can occur when you try to open or use QB Desktop due to difficulties accessing your company file on the server or local PC. This happens usually due to the network connection being unstable, or the folder where the file is saved needs additional permissions. This can hamper your workflow and have a negative impact on your important accounting and bookkeeping processes. You can resolve it using the Quick Fix My Program tool and the QB File Doctor Tool from the QuickBooks Tool Hub.

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