Users of QuickBooks frequently encounter the QB Application Has Stopped Working problem, which seriously disrupts workflow. Usually, system compatibility problems, conflicts with other applications, or corrupted program files cause this error. Users may try restarting their computer, reinstalling the program, updating QuickBooks to the most recent version, or using the QuickBooks Install Diagnostic Tool to fix the issue. Keeping Windows updated and doing a virus scan might also help avert this problem.

Troubleshooting Tips for  QB Application Has Stopped Working Problem