Greetings KRM1970, my name is Arnel an Independent Advisor and a Microsoft user, I hope my assistance can help you solve your issue.
Based on the behavior your MS Teams, the issue is the Brother driver. I would suggest to completely uninstall the Brothers printer drivers. Can you follow the link below:
https://www.tenforums.com/tutorials/101274-unin...
If you receive an error that printer is in use, you may also try this steps
https://techjourney.net/failure-unable-to-delet...
Disclaimer: The link above is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
Once it is uninstalled, you can try running MS teams. If it works, you can then try to install the printer drivers again. Make sure to download the latest version of the printer driver.
I hope this helps. Let me know if the problem still persist, don't hesitate to ask for further assistance.
Regards,
Arnel