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Asked: 2024-09-25T18:47:52+05:30 In:

I’m encountering an issue with my .NET web applications hosted on IIS in an EC2 environment. Every time I try to access them, I receive an error code 0x8007000d. Can anyone help me understand what this error means and how I can resolve it?

I’ve been pulling my hair out trying to get my .NET web applications up and running on IIS in an EC2 environment. It’s been a frustrating journey, and I’ve hit a major roadblock. Every time I try to access my applications, I’m greeted with an error code: 0x8007000d. I’ve done some digging online, and it seems like this error has a lot to do with invalid data being provided to the IIS or some configuration issues. But honestly, it’s all a bit over my head.

I mean, I’ve checked the basic stuff—my application pool is running, the site is started, and I’m pretty sure the permissions are set up correctly. Still, every attempt to access the application results in the same dreaded error. I’ve looked into potential issues with the XML configuration files too, as I read somewhere that this error sometimes points to malformed or incorrect XML data. But everything seems fine on that front, or at least I think it is, since I’ve validated the files multiple times.

I also came across some recommendations about checking the web.config files to ensure that there are no stray characters or syntax errors, especially anything around configuration sections. I’ve triple-checked those, and nothing jumps out at me as problematic, but who knows? Could I be missing something really obvious?

If anyone has experienced this error or knows of some common pitfalls to avoid in this situation, I would really appreciate your insights. Are there specific logs I should be looking at that might give me more details on what’s going wrong? I feel like I’m going in circles, and any help would be massively appreciated. I’m sure I can’t be the only one dealing with this, and it would be great to hear how others tackled it. Thanks in advance!

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    2 Answers


    1. The error code 0x8007000d typically indicates that there is an issue with the configuration files on your IIS server, often attributed to invalid XML data. Given your thorough checks on the application pool, site status, and permissions, it might be worth diving deeper into the web.config files. Pay close attention to the sections related to authentication, authorization, and custom errors, as small syntax errors or stray characters in these critical areas can lead to this error. It’s also a good idea to check if there are conflicting settings between your application’s web.config and the server-level configurations, as this can disrupt the normal functioning of your application.

      If everything in the web.config files seems correct, consider examining the IIS logs and Windows Event Viewer for additional clues. The logs in C:\inetpub\logs\LogFiles will show you detailed error messages that can assist in identifying the root cause. Additionally, enabling detailed error messages in IIS for your application may provide more context about the error when trying to access the site. Lastly, verify that your .NET Framework or .NET Core version matches the one specified in your application settings. Misalignment in these versions can also cause deployment issues, leading to errors such as the one you are facing.



    2. Wow, sounds like you’ve been through a lot trying to get your .NET app up and running on IIS! That 0x8007000d error can be such a nightmare, can’t it? It’s like it just pops up to ruin your day.

      From what you’ve described, it seems like you’ve covered a lot of the basics already. I get that it can be super frustrating to check everything and still hit the same wall. One thing that might help is looking at the Event Viewer on your EC2 instance. Sometimes it has more detailed error messages that can point you in the right direction.

      If you haven’t already, it might be worth taking a close look at your web.config file. I know you said you checked for stray characters, but even a small typo can cause huge issues. Maybe try pasting your config into an XML validator just to be 100% sure? It could save you from unintentional errors.

      Another thing to keep in mind is the application pool settings. Make sure it’s set to the correct .NET version for your app. Sometimes it’s easy to overlook that, especially if you’ve got multiple apps running.

      If all else fails, consider checking the IIS logs. They can be found at C:\inetpub\logs\LogFiles on your server. They often contain clues about what might be going wrong when requests hit IIS.

      Lastly, I totally understand how overwhelming this can all feel. You’re definitely not alone in this struggle. It might also help to search for forums where other developers have had similar issues. Sometimes, just hearing someone else’s experience can shine a light on the problem!

      Hope some of this helps, and good luck with it all!


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