Hi, try to triple tap on your screen and the orange border wil disappear. And, if triple tap isn't recognised in your device, you can find the resources under Accessibility command on your device.

Thanks for your reply. Unfortunately that didn't work. I've just used the Eset Internet Banking module, closed it, and now the thin border around FFox is green. Eset Banking opens FFox with a green border to denote protection is active. So this may be an artifact caused by Eset, though it has never done this with FFox before and the product version hasn't updated for some time, or it's a bug in FFox v.85.0.2 which I've only recently downloaded. Or, perhaps, it's Windows 20H2 19042.804. However, FFox is the only update that is new in this equation. I'll check the Eset forum..

OK. I've solved the issue. Eset has an option to secure all browsers. This might be a default or I'd inadvertently set it to that. Hence the orange/green line around FFox. Hope this helps anyone else using Eset-FFox with the same problem. Cheers