Red triangle with an exclamation mark

Above issue has been happening of late.
Our eM Client is PRO Business, purchased in July 2023.
Our internet service provider claimed our internet is working well even after reset.
We have switched off/on our modem …. Nothing works.
We are using Windows 8 and 10 on Chrome, Mozilla Firefox and sometimes, Edge.
No issue with Youtube, etc.

Is there an immediate solution w/o having to scroll through the (similar) issues others are encountering/encountered?

I have occasionally gotten this when attempting to connect through a VPN. If you are also, try pausing your VPN and see if you then connect.

Thank you for sharing your own experience, Gnemesis. We use only wifi.