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PostmanAdvent Calendar 2024

Day 1

Psostmanでのネットワークエラー?

Last updated at Posted at 2024-11-30

Postman Advent Calendar 2024 1日目

Salesforceのトレイルヘッドの中にもPostmanを使うお題が複数あります。その中でも最近起こったエラーの質問をまとめます

{
"error": "invalid_grant",
"error_description": "authentication failure"
}

始めはこの設定かと思いました。

File -> Settings
Turn off SSL certificate verification on the General tab.

This will prevent SSL certificate verification.

image.png

次にこれも疑いました

Adding CA certificates doesn't work for me. My certs are not self-signed but got the same error. Adding client certificates solved my problem. Quoted docs from Postman here: To send requests to an API that uses mutual TLS authentication, add your client certificate to Postman.

image.png

しかしよく聞いてみるとネットワークの問題で他のアプリも使えなかったらしい
プロキシサーバーは設定されているとのこと

以下を試してもらう

Configure Postman to use a proxy server
https://learning.postman.com/docs/getting-started/installation/proxy/

セキュリティートークンの間違えみたいです

I succeeded and I corrected the token, the username was missing in the body of the request

Error: Header "Host" contains invalid characters

一番多いのは...

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