Software⏱️ 3 min read📅 2026-06-19

How to Fix: Certificate Error - Navigation Blocked

Certificate error on Windows 8.1 with self-signed certificate

Quick Answer: Try enabling the 'Always Prompt for User Action' group policy setting in Windows 8.1 to allow access to the site.

📋 Table of Contents

  1. 🔍 Why This Happens
  2. 🚀 How to Resolve This Issue
  3. 💡 Conclusion

The Certificate Error - Navigation Blocked issue affects users who attempt to access an intranet site on a Windows 8.1 PC, resulting in a blocked navigation due to a self-signed certificate not being trusted by the browser.

This error is frustrating for users as it prevents them from accessing essential company resources, and it's essential to resolve this issue promptly.

🔍 Why This Happens

  • The primary reason for this error is the new key length restriction in Windows 8.1, which may prevent self-signed certificates from being trusted by the browser. Although the certificate in question has a key length of 2048, the restriction might still cause issues.
  • Another possible cause could be a configuration change or setting within Internet Explorer (IE) that prevents the browser from trusting self-signed certificates.

🚀 How to Resolve This Issue

Enabling the 'Continue to this website' option in IE

  1. Step 1: Open Internet Explorer (IE) and navigate to the intranet site that's causing the error.
  2. Step 2: Click on the 'Security' tab in the top right corner of the browser window.
  3. Step 3: In the 'Security' tab, click on the 'View certificates' button in the 'Error Details' section.
  4. Step 4: Select the certificate that corresponds to the intranet site and click on the 'Details' button.
  5. Step 5: Look for the 'Request Certificate' option and select 'Allow' or 'Continue' to enable this setting.
  6. Step 6: Close all browser windows and restart IE to apply the changes.

Using Fiddler to bypass the certificate error

  1. Step 1: Download and install Fiddler, a free web debugging proxy tool.
  2. Step 2: Open Fiddler and select the intranet site that's causing the error in the 'Target' dropdown menu.
  3. Step 3: In the Fiddler interface, navigate to the 'Errors' tab and look for any certificate-related errors.
  4. Step 4: If you see a 'RemoteCertificateNameMismatch' error, click on it to view more details about the issue.
  5. Step 5: Fiddler may provide additional information or suggestions to bypass the certificate error. Follow these instructions carefully to resolve the issue.

💡 Conclusion

By following one of the above methods, users should be able to resolve the Certificate Error - Navigation Blocked issue and access their intranet site without any issues.

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