Unblock Firefox from connecting to the Internet
- Какво означава "Вашата връзка не е сигурна"? When connecting to a website that uses an invalid TLS certificate or weak encryption, Firefox will display an error page saying "Your connection is not secure".
- How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites
- Configure Windows Firewall to allow Firefox access to the Internet
- Server Not Found - Troubleshoot connection problems
- Unable to access secure (HTTPS) sites in Firefox 43
- How to troubleshoot time related errors on secure websites