The error code “QuickBooks not responding” is associated with a corrupt QuickBooks file known as ‘QBWUSER.INI’. You could learn more about ways to resolve the error an its causes in the blog by following the link provided. If you have other queries regarding the aforementioned error, dial helpline number 1.800.579.0391.
source : https://zumashare.com/2021/10/08/whats-the-best-way-to-fix-the-error-quickbooks-not-responding/

If you are getting an error message “QuickBooks export to Excel not working,” this indicates either the Microsoft Office is corrupt, or you have not installed the updates of your QuickBooks application for a long time. However, you can quickly rectify the issue by following the instructions listed in the linked article. For more help related to the error, reach QuickBooks support at 1.800.579.0391.

source : https://wolfensteincenter.com/2021/11/03/quickbooks-export-to-excel-not-working-how-to-fix-this/

Among several reasons that prompt QuickBooks error 1612, corruption in Windows operating system is the most complex to troubleshoot. The linked article describes quick ways to resolve the error in the least time possible. For more help rectifying the issue, you can reach QuickBooks support at 1.800.579.0391.
source : https://yourtrc.com/2021/10/29/lets-figure-out-ways-to-fix-quickbooks-error-1612/

QuickBooks Error 6000 77 has occurred when your QuickBooks file is stored at a different place. This error is nearly impossible to resolve when you do not have enough permission to make changes in QuickBooks files. The user must fix this error as soon as possible to avoid any severe cause or data loss. Follow our linked article to resolve that error, or call us at 1.800.579.0391 for instant help.

source : https://keyposting.com/the-easiest-way-to-remove-quickbooks-error-6000-77/

The QuickBooks Error 3371: Could not initialize license properties is a common warning sign displayed on the QuickBooks screen for the users whose firewall or anti-virus program is blocking the software activities. There are several methods to erase this error from your device, one of them is updating your Windows. Have a quick read of our blog here to understand how you can implement this. You can also get in touch with our professionals at 1.800.579.0391 for quick resolution.
source : https://sites.google.com/view/acc-24/blog/how-to-handle-quickbooks-error-3371