How does OAuth 2.0 relate to 401 errors in Postman, and what steps can I take to resolve them?

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Grade: Education Subject: Support

Asked by: USER9935

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Answer (94)

USER5763

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(360)

With OAuth 2.0, a 401 error often indicates an issue with the access token. This could be an expired token, an invalid token, or a problem with the token refresh process. In Postman, ensure you've correctly configured the OAuth 2.0 flow, that the token is valid, and that you're handling token refresh appropriately. Check the scopes associated with the token.

Answered on 26 Agustus 2025

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How does OAuth 2.0 relate to 401 errors in Postman, and what steps can I take to resolve them?

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Answer (94)

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How can I use `curl` to diagnose a "SyntaxError: Unexpected token '<'" JSON parsing error?

If I'm getting "SyntaxError: Unexpected token '<'" and I'm expecting JSON, what are some common server-side causes?

How can I troubleshoot a "SyntaxError: Unexpected token '<'" error when parsing JSON received from an API?

What does the error "SyntaxError: Unexpected token '<'" often indicate when trying to parse JSON?

What are some common causes of a Canon printer entering an error state?

The radius of a wheel is 15 inches. what is the approximate distance, in feet, that the wheel has traveled after 75 revolutions? use 3.14 for π.

Bonjour, Une piscine a un volume de 180m3. On realise une maquette à l'echelle 1/100. Exprimer le volume de la piscine sur la maquette dans une unité adaptées.

Bonjour j'aurais besoin d'aide en français c'est urgent. Voici l'énoncé faire un paragraphe argumenté sur les juif qui sont considérée comme des victimes depuis la diaspora jusqu'en 1946

What if my server intentionally returns HTML sometimes, but JSON other times, depending on the request? How do I handle parsing in that scenario to avoid "Unexpected token '<'"?