What are the causes of the ‘QuickBooks Error 3371’?

It's likely that you'll run into 'QuickBooks Error 3371' for a variety of reasons. The error comes up due to an issue of network connectivity or totally lost network. There's a chance that access to the internet is blocked for some reason. It's possible that old Windows PCs are incapable of executing the QB files once they've been updated. It's conceivable that some or all of QuickBooks' files are corrupted.