> ## Documentation Index
> Fetch the complete documentation index at: https://docs.2extract.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Proxy & Connection Issues

> Find answers to the most common technical questions about connecting to and using our proxies.

<AccordionGroup>
  <Accordion title="What is the difference between HTTP and SOCKS5 protocols?">
    Both are protocols used to route your traffic.

    * **HTTP/S** is the most common and is supported by virtually all tools. It's ideal for web scraping.
    * **SOCKS5** is a more versatile, lower-level protocol that can handle different types of traffic beyond just web browsing.
      For most web scraping tasks, **HTTP is the recommended choice**. You can learn more in our **[Protocols Guide](/proxy-products/configuration/protocols)**.
  </Accordion>

  <Accordion title="What is the difference between Rotating and Sticky sessions?">
    * **Rotating Sessions (Default):** You get a new IP address for every single request you make. This is best for maximum anonymity and scraping many simple pages.
    * **Sticky Sessions:** You keep the same IP address for a set period (10 minutes). This is essential for tasks that require multiple steps, like logging into an account or completing a checkout process.
      For a detailed comparison, see our **[Session Control Guide](/proxy-products/configuration/session)**.
  </Accordion>

  <Accordion title="Why am I getting a 407 Proxy Authentication Required error?">
    This error means there's a problem with your access credentials or permissions. It is almost always caused by one of these issues:

    1. **Incorrect Username or Password:** Double-check your proxy credentials.
    2. **IP Not Whitelisted:** Your server's IP address is not in the `Authorized IPs` list for that specific proxy.
    3. **Zero Balance:** Your account balance has run out. Please top up on the **[Billing](https://2extract.com/app/billing)** page.
    4. **Proxy is Inactive/Suspended:** Check the proxy's status on the **[My Proxies](https://2extract.com/app/proxies)** page.
  </Accordion>

  <Accordion title="Why are my requests getting blocked or showing a CAPTCHA?">
    This is usually a sign that the **target website** has detected scraping activity. Our proxies are working, but the target is fighting back. Here are some things to try:

    * **Use a Sticky Session:** A constantly changing IP can be suspicious. Try using a sticky session to mimic a real user.
    * **Change Your Geo-Location:** The target may be less strict for traffic from a different country.
    * **Check Your Headers:** Ensure you are sending realistic `User-Agent` and other HTTP headers.
    * **Slow Down:** A high request rate is a major red flag. Add delays between your requests.
  </Accordion>

  <Accordion title="My proxy IP's location doesn't match what another service shows. Why?">
    IP geolocation is not an exact science, and different providers use different databases that update at different times. We rely on industry-standard databases to provide the most accurate targeting possible. A slight mismatch in the reported city is normal, but the country should always be correct.
  </Accordion>
</AccordionGroup>