Weird characters instead of yellow page error in asp net website

ASP.NET is a widely used programming language for developing web applications. It provides a robust framework that allows developers to create dynamic and interactive websites. However, like any other programming language, ASP.NET can sometimes encounter errors or display unexpected behavior. One issue that developers may face is weird characters instead of the expected yellow page error in an ASP.NET .

This problem can be frustrating and confusing, but there are several steps you can take to troubleshoot and resolve it. Let's explore some possible causes and solutions for this issue.

1. for Encoding Issues

One possible reason for weird characters instead of the yellow page error is an encoding issue. ASP.NET uses the UTF-8 encoding by default, but if the page is not properly encoded or if the encoding is set incorrectly, it can result in strange characters being displayed.

To check for encoding issues, you can examine the HTML meta tag in the head section of your ASP.NET page. Ensure that the charset is set to UTF-8, like this:

If the charset attribute is missing or set to a different encoding, update it to UTF-8 and see if the issue persists.

2. Verify Error Settings

possible cause of weird characters instead of the yellow page error is incorrect error handling settings in your ASP.NET application. By default, ASP.NET displays a yellow page error with detailed information about the error. However, if error handling is customized or disabled, it can result in unexpected characters being displayed instead of the error message.

To verify the error handling settings, check the web.config file of your ASP.NET application. Look for the element and ensure that the mode attribute is set to “Off” or “RemoteOnly”.

If the mode attribute is set to “On” or “RemoteOnly”, change it to “Off” to enable the display of yellow page errors.

3. and Logging

If the above steps do not resolve the issue, it may be necessary to debug and log the error to get more information about the problem. ASP.NET provides various debugging and logging mechanisms that can help identify the root cause of the issue.

You can use the Debug.WriteLine() to write debug information to the output in Visual Studio. Additionally, you can enable detailed error messages by setting the compilation debug attribute to “true” in the web.config file:

By enabling debugging and logging, you can gather more information about the error and potentially identify the cause of the weird characters being displayed.


Weird characters instead of the yellow page error in an ASP.NET website can be a frustrating issue, but by following the steps outlined above, you can troubleshoot and resolve the problem. Checking for encoding issues, verifying error handling settings, and utilizing debugging and logging mechanisms can help identify the root cause and a solution.

Remember to always test your changes and monitor the application after implementing any fixes to ensure that the issue is fully resolved.

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