Here's one more data point; probably not related to virus protection, but happened at about the same time. I can't log in to Chase.com with Firefox. The site redirects me to a browser download page. I download Firefox, install it, try it, and it works. Close and re-open the browser and it redirects me to the browser download page, same as before.
This only happens on this site, and, Chrome works fine. I contacted Chase technical support. They say it's failing on minimum browser version, which is 91.6. My browser version is 106.0.2 (64 bit). They claim they've been hearing about issues with Firefox, but the problem is not on their end, and I should contact my computer vendor. Hmm, sounds fishy. I'm guessing their error handler redirects to the same page, no matter what error happens, but that's just my guess.
Normal login url:
https://secure01a.chase.com/web/auth/dashboard#/dashboard/index/indexRedirect to browser download page:
https://www.chase.com/digital/resources/privacy-security/security/system-requirements