What is an HTTP 0 Error?

Last updated: March 18, 2026

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HTTP 0 errors are undefined server errors. This means the server has thrown an error with no pre-determined definition, or a connection has yielded no response. An HTTP 0 error may occur when:

  • The user has a slow or unstable internet connection
  • The back-end server is unavailable
  • The server has no pre-defined description for the error

While Noibu may detect HTTP 0 errors, we do not attribute any revenue loss to errors of this type. Learn more about How to Resolve HTTP Errors.