When browsing websites in Mozilla Firefox, you may encounter errors such as SSL_ERROR_BAD_MAC_ALERT. This problem occurs mostly on Mac computers and not so often on Windows 10 PCs. When users try to access secure websites with security certificate issues, the error is displayed. An error message is displayed:
“Secure connection failed.
An error occurred when connecting to example.com. SSL host is reporting an invalid message authentication code. Error code: SSL_ERROR_BAD_MAC_ALERT
The page you are trying to access cannot be displayed because the authenticity of the received data cannot be verified.
Please contact the owners of the site to let them know about this problem.”