Software⏱️ 4 min read📅 2026-06-04

How to Fix: Getting "Blocked mirror for repositories" maven error even after adding mirrors

Maven Build Failure -- DependencyResolutionException

Quick Answer: Check if the repositories are enabled in the pom.xml file and that the mirrors are correctly configured, also try to use the --non-interactive mode when running Maven commands.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. 🚀 How to Resolve This Issue
  3. 🎯 Final Words

The 'Blocked mirror for repositories' error is a frustrating issue that affects Maven users, causing them to fail when trying to download dependencies. This error occurs when Maven is unable to resolve dependencies due to blocked mirrors, which can be caused by various reasons such as network issues or incorrect configuration.

Adding mirrors to the Maven settings.xml file is often considered a solution for this problem. However, in some cases, even with the correct mirrors added, the error persists. This guide aims to help you troubleshoot and resolve the 'Blocked mirror for repositories' error.

🛑 Root Causes of the Error

  • The primary reason for the 'Blocked mirror for repositories' error is that Maven's default mirror settings are not configured correctly or are blocked by a network proxy or firewall. When Maven tries to download dependencies, it uses these mirrors to find the required artifacts. If any of these mirrors are blocked or not reachable, Maven will throw this error.
  • Another possible reason for this error is that the system's network configuration is preventing Maven from accessing the repositories. This can be due to a firewall blocking the port used by Maven or a proxy server intercepting the requests.

🚀 How to Resolve This Issue

Configuring Maven to use a specific mirror

  1. Step 1: Step 1: Add the mirror URL to the Maven settings.xml file. You can do this by opening the settings.xml file in a text editor and adding the following line under the element: `http://your-mirror-url.com`
  2. Step 2: Step 2: Update the repository URL in the POM file (if applicable). Make sure to use the correct mirror URL instead of the default one.
  3. Step 3: Step 3: Verify that the Maven settings.xml file is correctly configured by running the command `mvn --version` and checking the output for any errors.

Enabling Maven's proxy settings

  1. Step 1: Step 1: Check if your system has a network proxy server enabled. If it does, try disabling it to see if that resolves the issue.
  2. Step 2: Step 2: Update the Maven proxy settings by adding the following lines to the settings.xml file: `http://your-proxy-url.com:port`
  3. Step 3: Step 3: Verify that the proxy settings are correctly configured by running the command `mvn --version` and checking the output for any errors.

🎯 Final Words

By following these steps, you should be able to resolve the 'Blocked mirror for repositories' error in Maven. Remember to always verify your configuration and check for any network issues before giving up. If you're still experiencing problems, consider seeking further assistance from a colleague or online community.

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