macOS
Apple's operating system for Mac computers.
macOS powers a significant portion of the web ecosystem, but like any complex technology, it has its own unique set of challenges. When you encounter an error on this platform, it is rarely a random event. It is usually a specific response to a misconfiguration, a resource limit, or a compatibility issue. Our documentation for macOS is designed to cut through the noise. We don't just list the error codes; we explain the architecture behind them, helping you understand why the platform is rejecting your request or failing to load.
Common Errors
Domain Name Not Resolved
The DNS_PROBE_FINISHED_NXDOMAIN error stands for Non-Existent Domain. It means the Domain Name Syste...
DNS_PROBE_FINISHED_NO_INTERNET
This error indicates that the DNS probe failed because there is no internet connection available to ...
ERR_CONNECTION_TIMED_OUT
This error appears in the browser when the website takes too long to respond. The browser gives up w...
ERR_CONNECTION_RESET
This error indicates that the connection was unexpectedly closed by the server or a network device w...
NET::ERR_CERT_AUTHORITY_INVALID
This error means the browser does not trust the Certificate Authority (CA) that issued the website's...
ERR_INTERNET_DISCONNECTED
This error is a clear indication from the browser that the device is not connected to the internet....
ERR_BLOCKED_BY_CLIENT
The ERR_BLOCKED_BY_CLIENT error occurs when a resource (like a script or image) is blocked by an ext...
ERR_CERT_DATE_INVALID
The ERR_CERT_DATE_INVALID error occurs when the browser detects that the website's SSL certificate h...
ERR_CERT_REVOKED
The ERR_CERT_REVOKED error indicates that the website's SSL certificate has been explicitly revoked ...
DNS_PROBE_FINISHED_BAD_CONFIG
The DNS_PROBE_FINISHED_BAD_CONFIG error indicates that the browser was unable to resolve the domain ...
ERR_FILE_NOT_FOUND
The ERR_FILE_NOT_FOUND error appears when the browser attempts to access a local file (using the `fi...
Network Interface Is Down
The `kPOSIXErrorENETDOWN` error signifies that the network interface required for network communicat...
Host is Down
The `kPOSIXErrorEHOSTDOWN` error signifies that the system is unable to establish a connection with ...
Protocol Wrong Type for Socket
This error signifies that the protocol specified for a socket is incompatible with the socket's type...
kCFURLErrorSecureConnectionFailed on macOS
The kCFURLErrorSecureConnectionFailed error on macOS signifies that the system was unable to establi...
Server Certificate Untrusted
The kCFURLErrorServerCertificateUntrusted error in macOS indicates that the system's trust store doe...
Cannot Load From Network
This error signifies that the application was unable to retrieve data from the network. It's a gener...
kCFURLErrorBadServerResponse: Bad Server Response on macOS
The `kCFURLErrorBadServerResponse` error signifies that the server returned a response that the clie...
Best Practices for macOS Stability
Maintaining a stable macOS environment requires proactive monitoring. Many of the errors listed above can be prevented by regular updates, proper caching configurations, and strict permission management. If you are a developer, ensure you are checking the platform's specific error logs, which often contain more detail than the public-facing error message.
Whether you are dealing with API rate limits, server timeouts, or authentication failures, the solutions provided here are tested and verified. Bookmark this page to have a quick reference guide whenever macOS throws an unexpected exception.