HTTP Error 500.30 - ASP.NET Core app failed to start

Common solutions to this issue:

• The app failed to start
• The app started but then stopped
• The app started but threw an exception during startup

Troubleshooting steps:

• Check the system event log for error messages
• Enable logging the application process' stdout messages
• Attach a debugger to the application process and inspect

For more guidance on diagnosing and handling these errors, visit Troubleshoot ASP.NET Core on Azure App Service and IIS.

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Jun 8, 2026

Take the Garvey Challenge: See How Hyundai Stacks Up Against the Competition

by Travis Needham, updated on June 8th, 2026 If you’re shopping for a new vehicle, chances are you’ve looked at brands like Kia, Honda, Subaru, and Toyota. They’re all popular choices, but before you make your final decision, we invite you to take the Garvey Challenge at Garvey Hyundai. The Garvey Challenge is simple: compare […]

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HTTP Error 500.30 - ASP.NET Core app failed to start

Common solutions to this issue:

• The app failed to start
• The app started but then stopped
• The app started but threw an exception during startup

Troubleshooting steps:

• Check the system event log for error messages
• Enable logging the application process' stdout messages
• Attach a debugger to the application process and inspect

For more guidance on diagnosing and handling these errors, visit Troubleshoot ASP.NET Core on Azure App Service and IIS.