Users see QuickBooks Error 6000 80 when attempting to access or open a company file, frequently as a result of incorrect setup, network problems, or corrupted files. Because of this issue, the file cannot be accessed, which disrupts workflow. Verifying hosting settings, fixing the file, or restoring a backup are the only ways to fix it. 1.855.738.2784 is the number to reach a QuickBooks expert by telephone.