The page address is not displaying anything, it just shows a blank page.

Question

The page address is not displaying anything, it just shows a blank page.

samirls 20

I published my web app using Azure App Service (Windows). My application is MVC, dot net 8, with a database. The database works fine. I can connect to the database and run the application normally on my local machine, but after publishing the application on Azure, the result is a blank page. There are no errors to indicate what I can do, and I couldn't find any logs on Azure to give me a clue. I have been trying for 3 days and have no idea how to proceed. If anyone can help, I would be very grateful.

Shree Hima Bindu Maganti 4,925 Reputation points Microsoft External Staff Moderator

2024-12-13T05:45:15.0566667+00:00
Hi samirls ,

Welcome to the Microsoft Q&A Platform!
It sounds like your application is not running correctly on Azure App Service, but without visible errors, debugging can be tricky.
Check the wwwroot folder using Kudu/Console for web.config, views, and DLLs.

Add the following to web.config under <system.webServer>

httpErrors errorMode="Detailed" aspNetCore processPath="dotnet" stdoutLogEnabled="true"

Enable Application Logging in Diagnostic settings.

Use Log Stream or check LogFiles/stdout.log.

Confirm database connection strings in Configuration > Connection Strings. Ensure database access via firewall settings.

Verify the selected Runtime Stack matches your framework .

Test your app using dotnet publish output.

dotnet publish -c Release -o out cd out dotnet yourapp.dll

Turn on Remote Debugging in General Settings and attach Visual Studio.

Check routing and middleware in Program.cs or Startup.cs.

Ensure the service plan has sufficient resources .

Use Azure CLI or Visual Studio Publish to redeploy.

az webapp deployment source config-zip --src <your-zip-path> --name <app-name> --resource-group <resource-group>

If the issue persists, provide detailed error logs or screenshots.
Shree Hima Bindu Maganti 4,925 Reputation points Microsoft External Staff Moderator

2024-12-16T17:07:46.4333333+00:00

Hi samirls ,

Following up to see if you have chance to check my previous response and help us with requested information is helpful.
samirls 20 Reputation points

2024-12-17T00:18:25.5733333+00:00

Hi Shree, thanks for responding. I wasn’t able to view the server logs and therefore couldn’t solve my problem. After I learned that I had to enable the logs, go to the page, refresh it, and check the Azure site console for the logs, I was finally able to see an error message. Once I found an error indication, it was easy to fix.

The problem was that my .NET 8 version had a function that wasn’t present in the .NET 8 version on the Azure virtual machine. A very strange issue, which could only have been avoided if I had used Docker. However, I managed to work around the situation using ChatGPT, which created a function in my code to ignore the additional functionality my system had. That extra functionality didn’t make any difference in my application.

Thank you for your concern, and my biggest issue was not knowing how to check the error logs (the procedure isn’t very intuitive—you have to enable logs, refresh the page, etc.).

Accepted answer

1 additional answer

Your answer

Shree Hima Bindu Maganti 4,925 Reputation points Microsoft External Staff Moderator

2024-12-13T05:45:15.0566667+00:00

Hi samirls ,

Welcome to the Microsoft Q&A Platform!
It sounds like your application is not running correctly on Azure App Service, but without visible errors, debugging can be tricky.
Check the wwwroot folder using Kudu/Console for web.config, views, and DLLs.

Add the following to web.config under <system.webServer>

httpErrors errorMode="Detailed" aspNetCore processPath="dotnet" stdoutLogEnabled="true"

Enable Application Logging in Diagnostic settings.

Use Log Stream or check LogFiles/stdout.log.

Confirm database connection strings in Configuration > Connection Strings. Ensure database access via firewall settings.

Verify the selected Runtime Stack matches your framework .

Test your app using dotnet publish output.

dotnet publish -c Release -o out cd out dotnet yourapp.dll

Turn on Remote Debugging in General Settings and attach Visual Studio.

Check routing and middleware in Program.cs or Startup.cs.

Ensure the service plan has sufficient resources .

Use Azure CLI or Visual Studio Publish to redeploy.

az webapp deployment source config-zip --src <your-zip-path> --name <app-name> --resource-group <resource-group>

If the issue persists, provide detailed error logs or screenshots.
Shree Hima Bindu Maganti 4,925 Reputation points Microsoft External Staff Moderator

2024-12-16T17:07:46.4333333+00:00

Hi samirls ,

Following up to see if you have chance to check my previous response and help us with requested information is helpful.
samirls 20 Reputation points

2024-12-17T00:18:25.5733333+00:00

Hi Shree, thanks for responding. I wasn’t able to view the server logs and therefore couldn’t solve my problem. After I learned that I had to enable the logs, go to the page, refresh it, and check the Azure site console for the logs, I was finally able to see an error message. Once I found an error indication, it was easy to fix.

The problem was that my .NET 8 version had a function that wasn’t present in the .NET 8 version on the Azure virtual machine. A very strange issue, which could only have been avoided if I had used Docker. However, I managed to work around the situation using ChatGPT, which created a function in my code to ignore the additional functionality my system had. That extra functionality didn’t make any difference in my application.

Thank you for your concern, and my biggest issue was not knowing how to check the error logs (the procedure isn’t very intuitive—you have to enable logs, refresh the page, etc.).

Answer 1

Hi samirls ,

Thankyou for your Response.

I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", I'll repost your solution in case you'd like to accept the answer.
issue: The page address is not displaying anything, it just shows a blank page.
solutions: After I learned that I had to enable the logs, go to the page, refresh it, and check the Azure site console for the logs, I was finally able to see an error message. Once I found an error indication, it was easy to fix.

The problem was that my .NET 8 version had a function that wasn’t present in the .NET 8 version on the Azure virtual machine. A very strange issue, which could only have been avoided if I had used Docker. However, I managed to work around the situation using ChatGPT, which created a function in my code to ignore the additional functionality my system had. That extra functionality didn’t make any difference in my application.
You can mark it 'Accept Answer' and 'Upvote' if this helped you.

Answer 2

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The page address is not displaying anything, it just shows a blank page.

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