Quickbooks 2021 and Thunderbird 91
We have several workstations that are using Quickbooks enterprise 2021, and were using Outlook 2007. Due to some problems we were having with our email provider and outlook 2007 on 2 workstations I installed Thunderbird ver 91 and set it as the default email client. In the past I was using outlook as my primary email client, and had Thunderbird installed to try out. In the past there were 2 occasions when Quickbooks switched to Thunderbird without me doing anything. To switch back to outlook I had to uninstall Thunderbird.
Since setting Thunderbird as the default client on both workstations Quickbooks will not see it or offer it as a choice in the send form area of preferences. I have tried downgrading to an older version of Thunderbird and that did not work. I removed Quickbooks, rebooted the system, then reinstalled Quickbooks, and that did not work.
So in thinking that maybe Quickbooks would not work with Thunderbird I tried one more thing. We have one workstation that we use for processing UPS, and it has Quickbooks installed as a backup in case maintenance is being performed on one of the other workstations. So I installed Thunderbird on that workstation and when I started Quickbooks and went into preferences, send forms Thunderbird was listed as an email choice. I did send a test message from QB using Thunderbird and it work fine.
What do I need to do on the other 2 workstations to get QB to see and use TB ??

