Hello,
Thank you for posting in Q&A forum.
The HTTP Error 500.30 usually occurs in ASP.NET Core applications startup on IIS (Internet Information Services) and can be caused by multiple factors.
1.Please navigate to Windows Logs > Application and check for error entries related to the application.
2.Enable Stdout Log in AP.NET Core and check for any reminder inside.
3.Check if there's any missing dependencies or configuration missing or incompatible.
4.Ensure that the IIS user has proper permissions to access the application directory and its files.
To help other customers who may be facing the same issue, please don't forget to vote if the reply is helpful.
Best Regards
Zunhui