Thanks for becoming part of the Community, Bramar. I appreciate your detailed information and can understand the need to get this fixed. I'd be more than happy to guide you through some of our troubleshooting steps.
Since Thunderbird's set as your default email program, you'll want to try uninstalling it and QuickBooks, then performing a clean installation of both programs.
Here's how:
- Download a copy of the installer for your version.
- Be sure you have the license number handy. This information can be found by pressing F2 while in your books.
- You'll also need the product year and version. You can obtain these details from your account management portal.
- Access the Windows Start menu, perform a search for "Control Panel", then open Control Panel.
- Click Programs and Features or Uninstall a Program.
- Find QuickBooks Desktop in your list of programs.
- Select Uninstall/Change, Remove, then press Next. If you don't see the "Next" option, sign out and back in to Windows as an admin/user with admin's rights.
- Once it's successfully uninstalled, you'll want to uninstall Thunderbird. You can find detailed steps for this process on Mozilla's website, in their Uninstall Thunderbird from your computer resource.
- After both programs have been removed, you can reinstall Thunderbird, then QuickBooks. Subscribers who've encountered issues with Thunderbird have been able to solve their problems by using an older (60.5.1/earlier) version or Mozilla's latest release.
If the issues continue, I'd recommend considering switching to Outlook or web mail. You can additionally get in touch with our Customer Care team. They'll be able to pull up your account in a secure environment, conduct further research, and create an investigation ticket if necessary.
If there's any questions, please don't hesitate in sending a reply. I'll be here to help. Enjoy the rest of your day!
