Coding⏱️ 2 min read📅 2026-05-31

How to Fix: Why is HttpClient BaseAddress not working?

HttpClient BaseAddress not working due to partial URI path. Use UriBuilder or string interpolation to construct the full URL.

Quick Answer: Use UriBuilder or string interpolation to combine the base address and resource path, e.g., client.BaseAddress = new Uri(

📋 Table of Contents

  1. ✅ Best Solutions to Fix It
  2. 🎯 Final Words

The BaseAddress property of the HttpClient does not work as expected when a partial URI path is provided. This happens because the BaseAddress is used to set the root URL for all requests made using that instance of the HttpClient, but it does not affect the routing of the request.

✅ Best Solutions to Fix It

Method 1: Use Absolute URL

  1. Step 1: Replace the BaseAddress with an absolute URL for your request.

Method 2: Use a UriBuilder

  1. Step 1: Create a new UriBuilder instance and set its Uri property to the BaseAddress.

🎯 Final Words

When working with HttpClient, it's essential to understand how the BaseAddress works and choose the right approach for your specific use case.

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