A client called me because transactions they'd just entered were vanishing. Then their QuickBooks Desktop file stopped opening for some users. Then simple tasks that used to take seconds were taking forever. Their first thought was "QuickBooks is just glitchy." It wasn't. Their file had a hidden problem that had been building for months, and nobody knew to look for it. Here's what surprises people: I see this most often in the largest QuickBooks Desktop Enterprise companies,