QuickBooks Tool Hub is a free diagnostic and repair application from Intuit that bundles together the individual troubleshooting tools QuickBooks Desktop users used to have to hunt down one by one. Instead of downloading a separate fix for every symptom — a corrupted company file, a stuck installation, a network error in multi-user mode — you install one program and everything lives inside a single window with labeled tabs. It doesn't add new features to QuickBooks itself. It