In the world of web scraping and data acquisition, overseas HTTP proxies play a vital role. However, encountering an "HTTP proxy server not responding" error indicates that the proxy server is not acknowledging the requests sent by the computer. So, how can we resolve the issue of unresponsive overseas HTTP proxy servers? Let's explore some possible causes and solutions.

Possible Causes for Unresponsive Overseas HTTP Proxy Servers:

Firewall Settings:

Firewalls may identify the user's proxy and disrupt its normal functioning. To troubleshoot any access-related issues, users can temporarily disable the firewall and check if it resolves the problem.

Proxy Authentication Issues:

Most proxies have an authentication system that requires username and password verification. If users encounter issues with the proxy IP, they should verify the correctness of the proxy program's credentials.

Connection Errors:

Occasionally, users may encounter connection errors due to problems with the Internet Service Provider (ISP) or fluctuations in server stability. In such cases, simply disconnecting and reconnecting can often resolve the issue.

Anti-Scraping Measures:

When scraping data using web crawlers, excessive concurrency or high request frequency can trigger server restrictions, leading to IP bans. To address this, users can switch to a different IP and try reducing the crawler's concurrency or request rate to ensure smooth operation.

Improper Configuration:

Let's explore the most common misconfigurations and their corresponding solutions.

Method 1: Disable Proxy via Internet Properties

Step 1: Press Win + R simultaneously to open the "Run" dialog box.

Once open, type inetcpl. cpl and press Enter to launch Internet Properties.

Step 2: Click on the "Connections" tab first.

Next, click the button labeled LAN settings.

Step 3: In the Local Area Network (LAN) Settings window, select the checkbox for "Automatically detect settings."

Then, uncheck the checkbox for "Use a proxy server for your LAN."

Once done, click the OK button.

If you consistently experience unresponsive overseas HTTP proxy servers, it might be worth considering whether the issue lies with the IP proxies themselves. Therefore, choosing a reliable overseas HTTP proxy becomes crucial. 

iProyal, is an excellent choice, as it provides accurate city-level IP targeting, regularly updates its IP pool, and ensures fast and stable connections. It caters to the field of big data acquisition, assisting businesses and individuals in efficiently acquiring data sources at an affordable price.