Coding⏱️ 4 min read📅 2026-06-15

How to Fix ERROR 405 Error – How to get around ERROR 405 Method Not Allowed with HTTP post

How to fix HTTP POST error on website with method not allowed.

Quick Answer: Use a different HTTP request method, such as GET or PUT, or use a tool that can handle form data submission.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. ✅ Best Solutions to Fix It
  3. ✨ Wrapping Up

The ERROR 405: Method Not Allowed error occurs when a web application or server does not support HTTP POST requests. This issue affects users who attempt to send data to a website using the POST method, but the website only supports GET requests. The frustrating experience is that the post code is present on the website, indicating that it was intended for use, but the website's configuration prevents its usage.

To resolve this issue, we will outline two alternative methods to input data and retrieve results from the website. These methods do not rely on HTTP POST requests, ensuring compatibility with websites that only support GET requests.

💡 Why You Are Getting This Error

  • The primary reason for this error is that the website's configuration does not support HTTP POST requests. This can be due to various factors, including security measures or outdated server software. In some cases, the website may have intentionally disabled POST requests to prevent malicious activity.
  • An alternative reason for this error could be that the website uses a Content Security Policy (CSP) that restricts the use of POST requests. CSP is a security feature that helps protect websites from cross-site scripting attacks by limiting which sources of content can be executed within a web page.

✅ Best Solutions to Fix It

Using a GET Request with Query Parameters

  1. Step 1: To work around this issue, you can use a GET request instead of a POST request. This method is suitable when the website only supports GET requests.
  2. Step 2: Open a web browser and navigate to the website's URL: https://www.colorado.gov/revenueonline/_/#2. Click on the 'Verify a Sales Tax License' link in the bottom right corner.
  3. Step 3: In the address bar, add query parameters using ampersands (&) instead of POST data. For example: https://www.colorado.gov/revenueonline/_/#2?VIEW__=CG_LicVer&LASTFOCUSFIELD__=&DOC_MORAL_ID__=0&DvfmoUb__0_0_Fdr2ZH=7777777

Using a Script to Post Data

  1. Step 1: Another approach is to use a script, such as JavaScript or Python, to send the POST data. This method requires some programming knowledge and can be more complex than using GET requests.
  2. Step 2: You can use libraries like BeautifulSoup (Python) or Axios (JavaScript) to send the POST data. For example: Using Python with BeautifulSoup, you would need to parse the HTML, find the form element, and then submit it using the 'submit' method. Using JavaScript with Axios, you would need to create a new request object, set the POST data, and then send the request.

✨ Wrapping Up

By following these alternative methods, you can input data and retrieve results from the website without relying on HTTP POST requests. While it may take some extra effort, these workarounds ensure compatibility with websites that only support GET requests.

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