The QuickBooks Web Connector Error affects the desktop edition of QuickBooks enterprise solutions, and once a user encounters the error, QuickBooks will be unable to exchange data with any third-party web-based application. When the log file QWCLOG.TXT is damaged or malformed, this problem happens. When you come across this error, you may see different error message descriptions on your screen. The corruption of the QuickBooks web connector file (QBWCLOG.TXT) is a common cause of QuickBooks Web Connector difficulties.