Software⏱️ 4 min read📅 2026-06-11

How to Fix: An application is using a DLL with "ordinal not found" error. It should't be using this DLL and I can't figure out why it is

Troubleshooting DLL ordinal not found error in YNAB 4 with Tagging for Windows.

Quick Answer: Use Process Explorer to identify the actual dependency chain and try to find a different path for the DLL.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🔧 Proven Troubleshooting Steps
  3. 💡 Conclusion

YNAB 4, a popular personal finance management application, is experiencing an issue where it's using a DLL called ExplorerExtension.dll, which is not expected. This error occurs when YNAB 4 tries to load the ExplorerExtension.dll but fails to find it, resulting in a 'ordinal not found' error.

This issue can be frustrating for users who rely on YNAB 4 for their financial management needs. In this guide, we'll walk you through the steps to troubleshoot and resolve this issue, ensuring that YNAB 4 runs smoothly without any conflicts with other installed tools.

💡 Why You Are Getting This Error

  • The primary reason for this error is likely due to a compatibility issue between YNAB 4 and Tagging for Windows. The two applications may have conflicting dependencies or libraries that are causing the ExplorerExtension.dll to be loaded instead of the expected DLL. This can happen when there's a mismatch in the DLLs used by the two applications.
  • Another possible cause is that the system PATH environment variable is not correctly configured, leading to the ExplorerExtension.dll being loaded instead of the expected DLL.

🔧 Proven Troubleshooting Steps

Manually updating the DLLs

  1. Step 1: Open the Command Prompt as an administrator and navigate to the directory where YNAB 4 is installed. The path should be something like C:\Program Files (x86)\YNAB 4.
  2. Step 2: Use the 'regsvcs' command to register the DLLs used by YNAB 4. This will ensure that the correct DLLs are loaded instead of the ExplorerExtension.dll.
  3. Step 3: After registering the DLLs, restart YNAB 4 and verify if the issue is resolved.

Reconfiguring the system PATH

  1. Step 1: Open the System Properties window by right-clicking on the Start button and selecting 'System'. Click on the 'Advanced system settings' link on the left side.
  2. Step 2: In the System Properties window, click on the 'Environment Variables' button. Under 'System Variables', scroll down and find the 'Path' variable, then click 'Edit'.
  3. Step 3: Remove the path to the Tagging for Windows DLL from the system PATH variable. This will ensure that the ExplorerExtension.dll is not loaded instead of the expected DLL.
  4. Step 4: After reconfiguring the system PATH, restart YNAB 4 and verify if the issue is resolved.

💡 Conclusion

To resolve the 'ordinal not found' error in YNAB 4, try manually updating the DLLs used by the application or reconfigure the system PATH to exclude the path to the Tagging for Windows DLL. If the issue persists, consider reinstalling YNAB 4 and Tagging for Windows, or seeking further assistance from the developers of these applications.

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