Proxy Server Refused Connection

The configured proxy server refused the connection. Check the browser's network/proxy settings, or that the proxy service is actually running and reachable.

References

searchfox.org/mozilla-central/source/xpcom/base/ErrorList.py
support.mozilla.org/en-US/kb/what-do-network-error-messages-mean

In this namespace

← previous NS_ERROR_OFFLINE Browser Is Offline next → NS_ERROR_REDIRECT_LOOP Redirect Loop Detected

NS_ERROR_MALFORMED_URI NS_ERROR_NET_INTERRUPT NS_ERROR_NET_RESET NS_ERROR_NET_TIMEOUT NS_ERROR_OFFLINE NS_ERROR_PROXY_CONNECTION_REFUSED NS_ERROR_REDIRECT_LOOP NS_ERROR_UNKNOWN_HOST NS_ERROR_UNKNOWN_PROTOCOL NS_ERROR_UNKNOWN_PROXY_HOST SEC_ERROR_EXPIRED_CERTIFICATE