Chrome Proxy Authentication: Missing onAuthRequired Callbacks
Separate extension event visibility from cached authentication and completed requests when debugging Chrome proxy login callbacks.
A message inside onAuthRequired proves that listener ran. An empty console does not show which route the request took or whether an earlier exchange supplied authentication.
| Observation | Keep it separate from |
|---|---|
| Chosen route | Whether an authentication challenge occurred |
| Received challenge | Whether this listener could observe or handle it |
| Listener output | Whether you are watching the correct extension console |
| Final request outcome | Whether a fresh callback was needed |
Establish the actual network outcome first. The request might reuse authentication or an established connection, go direct, or never reach the expected endpoint.
If a relevant challenge occurred, inspect the listener's filter, permissions and supported extension context. Manifest generation and deployment model affect authentication handling; an obsolete blocking-listener example cannot define the current permission model. Watch the extension service worker's console when that is where the listener runs, rather than relying on page output. For Manifest V3, register the authentication listener synchronously before asynchronous account loading.
Repeated navigation is not necessarily a new challenge. Historical cache reports do not establish a rule that the event fires exactly once per browser session; observe the browser and version in use.
For a controlled comparison, isolate the intended extension configuration and account using supported browser tools. Avoid undocumented cache-clearing tricks or changing the whole operating system. The four observations identify whether a listener is missing or this connection simply did not need it.