Okta Identity Engine CORS Errors: Understanding “Failed to fetch”
During an authorized authentication-flow assessment, a sign-in page loaded, but submitting the form produced Failed to fetch. DevTools also reported a CORS error associated with a request to Okta’s /i
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mno tao
The point about cached preflights is easy to miss: an attempt with no new OPTIONS entry looks like "no preflight needed" at first glance. When you need to pin down the stage, do you reproduce in a fresh profile or private window so the preflight cache starts empty, or is there a more reliable way to tell from the original capture?
Agree on keeping replacement origins consistent too. Anonymizing two same-origin hosts into different placeholders would invent a CORS problem that was never there.