Hi, I am following the instructions in the module "Develop and configure an ASP.NET application that queries an Azure SQL database". I finally was able to build the web app after getting some help in Q&A . However, when I tried to access the website ([http://educationapp-25887.azurewebsites.net/]), I received an error message ":( Application Error If you are the application administrator, you can access the diagnostic resources." Here are the app details when it was built and deployed. Here is the overview of the app in the Azure Portal. It looks like it's working. I just can't get access to it thru the URL. After doing some research and troubleshooting in Azure Portal, I found a Network/Connectivity issue saying "App is not configured for VNet Integration". I tried to enable VNet, but I found my app is not qualified for it. Below is the network settings. I'm not sure if VNet is the cause of the issue. Can anyone help me resolve this error and successfully access my application website? Thanks in advance.

Error accessing web application: ":( Application Error If you are the application administrator, you can access the diagnostic resources."

YAU NICHOLAS HENG WAH 25

Hi, I am following the instructions in the module "Develop and configure an ASP.NET application that queries an Azure SQL database". I finally was able to build the web app after getting some help in Q&A. However, when I tried to access the website ([http://educationapp-25887.azurewebsites.net/]), I received an error message ":( Application Error If you are the application administrator, you can access the diagnostic resources." User's image

Here are the app details when it was built and deployed. User's image

Here is the overview of the app in the Azure Portal. It looks like it's working. I just can't get access to it thru the URL. User's image

After doing some research and troubleshooting in Azure Portal, I found a Network/Connectivity issue saying "App is not configured for VNet Integration". I tried to enable VNet, but I found my app is not qualified for it. User's image

Below is the network settings. User's image

I'm not sure if VNet is the cause of the issue. Can anyone help me resolve this error and successfully access my application website? Thanks in advance.

JasonPan - MSFT 5,451 Reputation points Microsoft Vendor

2024-02-26T09:59:26.13+00:00
Hi @YAU NICHOLAS HENG WAH,

When you use linux platform, we need to know the startup command. For asp.net core, we can use command below.

dotnet project_name.dll

And you also mentioned Azure SQL Database, then we also need to make sure the app service is whitelisted to access database. You can check it by check Azure SQL Database Firewall rules. Best Regards Jason
YAU NICHOLAS HENG WAH 25 Reputation points

2024-02-27T14:18:28.7833333+00:00

Hi @JasonPan - MSFT , Thank you for following up! The reason I'm using the Linux platform is because directly following the instructions of the module does not generate a correct response.

I have to add --os linux for the webapp to build and deploy.

I'm using the Azure Cloud Shell provided by the module. I'm not using Docker container. Can you let me know where I can add the dotnet command? Much appreciated.
JasonPan - MSFT 5,451 Reputation points Microsoft Vendor

2024-02-28T07:10:25.7+00:00

Hi @YAU NICHOLAS HENG WAH, Thanks for your reply. From the screenshoots you shared, I found the runtime_version_detected and runtime_version not match. You can set it and also can find the startup command.

Best Regards

Jason
YAU NICHOLAS HENG WAH 25 Reputation points

2024-02-28T11:03:23.59+00:00

Hi @JasonPan - MSFT , I've added the startup command and restarted the app. It is still displaying the "Application Error" message.

I don't know how to update the runtime_version_detected. In the picture above, there were only 3 choices in "Major version". They are .NET 6, .NET 7 and .NET 8. Actually I'm not sure if there is an educationapp-739.dll file cuz this is an AZ webapp. I cannot find the bin folder. I ran code . within [ ~/education ]$ and below opened. Best regards, Nick.
JasonPan - MSFT 5,451 Reputation points Microsoft Vendor

2024-02-28T11:09:01.1733333+00:00

Hi @YAU NICHOLAS HENG WAH,

I find the project is base on .netcore2.1, could you share how you publish the site ?

Best Regards Jason
YAU NICHOLAS HENG WAH 25 Reputation points

2024-02-28T11:51:43.6433333+00:00

Hi @JasonPan - MSFT , I follow the instructions in Microsoft Training - Develop and configure an ASP.NET application that queries an Azure SQL database, a beginner module. Best regards, Nick.
JasonPan - MSFT 5,451 Reputation points Microsoft Vendor

2024-02-29T08:07:25.4733333+00:00

Hi @YAU NICHOLAS HENG WAH,

Could you open the project by using vs2022 or vscode, then deploy it again, instead of using the az webapp up command.

Because there are so many products involved in this issue, I've also added a Tag for Azure App Service. We need to troubleshoot the problem step by step.

Best Regards

Jason
JasonPan - MSFT 5,451 Reputation points Microsoft Vendor

2024-02-29T09:48:34.4633333+00:00

Hi @YAU NICHOLAS HENG WAH,

We also could try to enable diagnostic logs to check more details.
https://learn.microsoft.com/en-us/azure/app-service/troubleshoot-diagnostic-logs

Best Regards

Jason
YAU NICHOLAS HENG WAH 25 Reputation points

2024-02-29T11:05:47.1233333+00:00

Hi @JasonPan - MSFT , sounds like the module is broken. I hope the Azure team can get it fixed. I was looking forward to seeing the webapp up and running and interacting with the course database. I am a beginner in programming and SQL, so I don't know how to run the program besides following the instructions. But thanks for your responses and follow-ups on the issue. For now, I will wait for the fix before continuing with the module. In the meantime, I will look for other modules to complete. Thanks!

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