QuickBooks Has Stopped Working: Simple Fixes for Common Issues?? When QuickBooks stops working, a common cause is corrupted files or improper installation. Start by repairing QuickBooks using the built-in repair tool. Ensure your Windows OS is up to date and that your computer’s security software is not interfering. If nothing works, a clean reinstall of QuickBooks can often resolve the issue entirely. https://www.weedclub.com/blogs/business18211/quickbooks-has-stopped-working-easy-troubleshooting-steps