Hello,
Make sure the ASP.NET Core Hosting Bundle is installed on the server. Set the IIS App Pool to No Managed Code and ensure the IIS App Pool identity has proper permissions to access the app files. Check Event Viewer and enable stdout logs for detailed error information. Verify the web.config file is correctly set up and points to the app path. Ensure you're deploying the published app and not the source code.
If the issue persists, please share the specific error message.
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Thanks & Regards, Tasadduq Burney
(Microsoft MVP & MCT)
(Azure 15x)