Software⏱️ 2 min read📅 2026-05-31

How to Fix: Jupyter Notebook not saving: '_xsrf' argument missing from post

Jupyter Notebook not saving: '_xsrf' argument missing from post

Quick Answer: Check the Jupyter server logs for any errors or issues that may be causing the problem. Try restarting the Jupyter server or using a different port to resolve the issue.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🛠️ Step-by-Step Verified Fixes
  3. ✨ Wrapping Up

The '_xsrf' argument missing from post error in Jupyter Notebook occurs when the notebook is unable to verify the security token sent with each request. This can happen due to various reasons such as network issues, browser restrictions, or incorrect configuration.

💡 Why You Are Getting This Error

  • [Cause]

🛠️ Step-by-Step Verified Fixes

Method 1: Restarting the Kernel

  1. Step 1: Click on 'Kernel' -> 'Restart' in the top right corner of the Jupyter Notebook interface.

Method 2: Using the `%config` magic command

  1. Step 1: Open a new cell in your Jupyter Notebook and type `%config --Insecure` (without quotes). This will disable the security token verification.

✨ Wrapping Up

By following these steps, you should be able to resolve the '_xsrf' argument missing from post error and save your Jupyter Notebook successfully.

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