Handler "ExtensionlessUrlHandler-Integrated-4.0" has a bad module "ManagedPipelineHandler" in its module list

📝🔐🔌 Blog Post: The Mystery Behind the "Handler 'ExtensionlessUrlHandler-Integrated-4.0' has a bad module 'ManagedPipelineHandler'" Error ⚠️🔧

Have you ever encountered the frustrating "Handler 'ExtensionlessUrlHandler-Integrated-4.0' has a bad module 'ManagedPipelineHandler' in its module list" error message while accessing your web application? 😖 Fear not, because we're here to uncover the mystery behind this issue and provide you with easy solutions to fix it! 💪

In the context of the original question, the user attempted a workaround on IIS (Internet Information Services) by making a GET request from code in an ASP.NET application. Although the workaround seemingly worked, it led to an unexpected error when trying to access the application via a web browser.

But what causes this error and how can we resolve it? Let's dive into the details and unveil the solutions! 🤔💡

Understanding the Problem 🕵️‍♂️

The "Handler 'ExtensionlessUrlHandler-Integrated-4.0' has a bad module 'ManagedPipelineHandler' in its module list" error occurs due to a misconfiguration within the IIS module list. In simpler terms, the web server is unable to handle incoming requests correctly because of a module conflict.

Common Causes and Solutions 🚦💡

1. Misconfigured Handler Mappings:

   • In IIS, navigate to your web application's Handler Mappings.

   • Look for the specific handler mentioned in the error message, namely, 'ExtensionlessUrlHandler-Integrated-4.0', and check its Module entry.

   • If the module entry is incorrect or missing, update it to 'ManagedPipelineHandler'.

   • Save the changes and try accessing your web application again.

2. Corrupted or Missing ASP.NET Installation:

   • Sometimes, the error can result from a corrupt or incomplete ASP.NET installation.

   • Open the command prompt with administrator privileges.

   • Run the following command to reinstall or repair ASP.NET:

     dism /online /enable-feature /featurename:IIS-ASPNET45 /all

   • Once the installation/repair process completes, restart IIS and try accessing your web application.

Engage and Share Your Experience ✨📢

We hope these solutions helped you resolve the frustrating "Handler 'ExtensionlessUrlHandler-Integrated-4.0' has a bad module 'ManagedPipelineHandler' in its module list" error. 🎉

Have you encountered this error before? How did you fix it? Share your experience and tips in the comments below, and let the community benefit from your expertise! 🗣️🤝

Remember, technology can be challenging sometimes, but with a supportive community, we can conquer any problem together! Let's empower each other! 💪❤️

#Hashtags: #IIS #ASPNET #WebDevelopment #Troubleshooting #ErrorFix #TechCommunity

🔗 Link to share: Blog Post: The Mystery Behind the "Handler 'ExtensionlessUrlHandler-Integrated-4.0' has a bad module 'ManagedPipelineHandler'" Error