Quickbooks-Avast email problem with Desktop Premier 2020

We’ve narrowed the email problem down to AVast, we’re having problems sending emails within QB when we upgraded from Quickbooks Desktop Premier 2016 to 2021. We get a pop up error message. we’ve exhausted all avenues except Avast. not sure what other Avast settings we should be looking at?? Please advise ASAP
Thanks!
Catherine

Hi Catherine
What version of Windows?
What version of Avast, and whether paid or free?
Any other antivirus/antimalware software installed?

You could first try a Repair of Avast.
Menu>Settings>Troubleshooting>[Repair App]

Can you give details or post a screenshot of the error pop-up you are seeing.
(You can attach screenshot using the “Attachments and other options” link under the text box.)