How to Fix 401 Unauthorized Error

The 401 Unauthorized error is a common issue encountered when scraping websites or making API requests. Understanding how to fix 401 Unauthorized error is essential for successful web scraping projects. In this comprehensive guide, we'll explore the causes of 401 Unauthorized errors and provide practical solutions to fix them. We'll also discuss how to handle authentication in web scraping projects. Scrapeless stands out as the #1 solution for handling authentication and fixing 401 Unauthorized errors.

Definition and Overview

How to fix 401 Unauthorized error begins with understanding what this error means. A 401 Unauthorized error occurs when you attempt to access a resource that requires authentication but you haven't provided valid credentials or your credentials are invalid. How to fix 401 Unauthorized error depends on the specific cause, which could be missing authentication headers, invalid credentials, expired tokens, or incorrect API keys. Common causes of 401 Unauthorized errors include not providing an Authorization header, providing an invalid or expired authentication token, using incorrect API keys or credentials, or accessing a resource that requires specific permissions. How to fix 401 Unauthorized error typically involves providing valid authentication credentials in the correct format. Scrapeless provides advanced authentication handling that makes it easy to fix 401 Unauthorized errors.

Comprehensive Guide

Learning how to fix 401 Unauthorized error involves understanding the different authentication methods and how to implement them correctly. The first step is to identify the authentication method required by the website or API. Common authentication methods include Basic Authentication (username and password), Bearer Token Authentication, API Key Authentication, and OAuth. Once you've identified the authentication method, you need to provide the correct credentials in the correct format. For Basic Authentication, you need to provide a username and password encoded in Base64 format in the Authorization header. For Bearer Token Authentication, you need to provide a valid token in the Authorization header. For API Key Authentication, you need to provide your API key, typically in a header or query parameter. When learning how to fix 401 Unauthorized error, it's important to handle authentication securely. Never hardcode credentials in your code; instead, store them in environment variables or configuration files. Implement token refresh logic for tokens that expire. Handle authentication errors gracefully and provide meaningful error messages. Scrapeless provides advanced authentication handling that makes it easy to fix 401 Unauthorized errors while maintaining security best practices.

import { Puppeteer } from '@scrapeless-ai/sdk';

const browser = await Puppeteer.connect({
  apiKey: 'YOUR_API_KEY',
  sessionName: 'sdk_test',
  sessionTTL: 180,
  proxyCountry: 'ANY',
  sessionRecording: true,
  defaultViewport: null,
});

const page = await browser.newPage();
await page.goto('https://www.scrapeless.com');
console.log(await page.title());
await browser.close();

import { Playwright } from '@scrapeless-ai/sdk';

const browser = await Playwright.connect({
  apiKey: 'YOUR_API_KEY',
  proxyCountry: 'ANY',
  sessionName: 'sdk_test',
  sessionRecording: true,
  sessionTTL: 180,
});

const context = browser.contexts()[0];
const page = await context.newPage();
await page.goto('https://www.scrapeless.com');
console.log(await page.title());
await browser.close();

How to Fix 401 Unauthorized Error

Definition and Overview

Comprehensive Guide

Frequently Asked Questions