Enable Detailed IIS Error Messages

Enabling Detailed Errors

By default, IIS hides detailed error messages however you can enable it through either of the following ways.

Obviously this should only be enabled in a non-production environment as it may create potential security implications.

IIS Manager Console method

1. Open the IIS Manager console
2. Click your website node
3. Open the ‘Error Pages‘ configuration screen
4. Click ‘Edit Feature Settings‘ from the right hand menu
5. Choose the ‘Detailed errors‘ option.

Web.config file method

<configuration>
 <system.webServer>
   <httpErrors errorMode="Detailed" />
 </system.webServer>
</configuration>

Result

Before enabling detailed error messages

After enabling detailed errors

• About
• Latest Posts

Shane Bartholomeusz

G’day, I’m a technical solutions consultant based in Perth, Australia that specialises in the Microsoft technology stack, including .NET, Dynamics 365, Azure and general web development etc.

This blog is my place to share my thoughts, helpful solutions and just random nerdy stuff.

Latest posts by Shane Bartholomeusz (see all)

• Solved: Dotnet EF CLI ‘Could not execute’ Error - 26th March 2023
• Solved: Cognitive Services – Operation returned an invalid status code ‘Unauthorized’ - 5th February 2023
• Quick Tip: VS Code Restore Previous File Version - 5th December 2022