Checking for Errors on a New Installation of NopCommerce -Monday, 4 May 2020
Check Error Logs
1. In Web.config change stdoutLogEnabled = "false" to true, Restart Application
then check the logs at \wwwroot\nopCommerce\Logs
The error(s) there might tell you something.
2. Check your Application and IIS Application logs in the Event Viewer.
The error(s) there might tell you something.