Official documentation
SpeechRecognitionErrorEvent: error property
MDN Web Docs (Mozilla), 2026
Read the originalRead on October 17, 2026
- What it is
- MDN's list of the error codes a web page receives when speech recognition fails, including the network and not-allowed codes.
- How much weight it carries
- A reference page describing the Web Speech API. Browsers can differ in which errors they report, so an error code is a useful clue rather than a full diagnosis.
Facts taken from this source
- When speech recognition fails because a network connection it needs is missing, the page receives the network error code.
“network Network communication required for completing the recognition failed.” (error values list)
- The not-allowed error means the browser blocked speech input for security, privacy or user preference reasons.
“not-allowed The user agent disallowed any speech input from occurring for reasons of security, privacy or user preference.” (error values list)
Pages that rest on this source
- Speech to Text in Chrome: Built-in Options and ExtensionsGuide
- Web Speech API: Speech Recognition in the BrowserGuide
- How do you add speech recognition to a website with JavaScript?Question
- Why does speech recognition show a network or not-allowed error?Question
- Why is dictation not working in Chrome?Question
- Site microphone permissionGlossary