Computer says unable to connect to proxy server

Resolved "Unable to connect to proxy server" error message

Apr 22, 2017 Unable to connect to computer (Remote Web Workplace SBS Jun 13, 2011 Kindle fire says unable to open server WiFi is connected

If you use a proxy server, make sure that the proxy server can connect to the Internet. For instructions on configuring proxy settings in Firefox, see Firefox connection settings below. Firefox cannot load websites but other browsers can. If Firefox cannot load websites, but your other browser can, follow the instructions below.

There is a problem with the proxy server's security certificate, %s. The name on the security certificate is invalid or does not match the name of the site. Outlook is unable to connect to this server. (%s) 5 Ways to Connect to a Proxy Server - wikiHow Feb 05, 2020

1. Change the DNS server settings by following these steps – the instructions apply to all Windows versions. 2. Turn off Windows Defender Firewall using the method described in this article. 3. Reset Internet Explorer settings (instructions are available here). 4. Update the driver for your network adapters.

Firefox "Unable to connect" - TechSpot Forums Jul 03, 2008