Both FF and Edge were working until a few days ago. Now they work for some websites, but not for others. The error message is as shows in the attached screenshot for Edge. The one for FF is similar. It works for Google.com, but not for Amazon.com or msn.com.
A search turned up a bunch of different "solutions" involving such as:
- Setting the preferred DNS to 22.214.171.124 and the alternate to 126.96.36.199 (it is currently set to obtain the DNS server automatically.
- Setting the preferred DNS to 188.8.131.52 and the alternate to 184.108.40.206.
- Disabling the proxy server.
- Clearing cache and cookies.
Do any of these people know what they are talking about?
As I said, it happens with both Edge and Firefox, so I doubt that it is a browser setting.