What are the most common QuickBooks problems?

https://quickbookhelpdesk.com/blog/common-quickbooks-error-codes-solutions/

Common issues include login errors, company file damage, installation failures, banking connection problems, payroll errors, printing issues, and software update failures. QuickBooks problems can interrupt business operations, but most issues can be resolved with careful troubleshooting. Login errors, company file damage, installation problems, banking issues, payroll errors, printing problems, and software updates are among the most common challenges users face. Keeping QuickBooks updated, maintaining regular backups, checking your internet connection, reviewing account settings, and performing routine maintenance can solve many problems and help prevent future issues.