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Adams Admin or Adams Web Fails to Start

Adams Admin or Adams Web Fails to Start

Owned by Mont Rothstein
Mar 03, 2025
2 min read

Symptoms

When navigating to the home page a message similar to the following appears.

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

Details

The event log has three errors similar to the following (in chronological order).

Source: .NET Runtime

Application: w3wp.exe CoreCLR Version: 8.0.1325.6609 .NET Version: 8.0.13 Description: The process was terminated due to an unhandled exception. Exception Info: System.Exception: The authentication mode in the web.config file does not match the authentication mode in the database. at Program.<Main>$(String[] args) at Program.<Main>(String[] args)

Source: IIS AspNetCore Module V2

Application '/LM/W3SVC/1/ROOT/AdamsAdmin' with physical root 'C:\inetpub\wwwroot\AdamsAdmin\' hit unexpected managed exception, exception code = '0xe0434352'. First 30KB characters of captured stdout and stderr logs: Unhandled exception. System.Exception: The authentication mode in the web.config file does not match the authentication mode in the database. at Program.<Main>$(String[] args) at Program.<Main>(String[] args)

Source: IIS AspNetCore Module V2

Application '/LM/W3SVC/1/ROOT/AdamsAdmin' with physical root 'C:\inetpub\wwwroot\AdamsAdmin\' failed to load coreclr. Exception message: CLR worker thread exited prematurely

Cause

If at startup the web.config authentication mode does not match the database's authentication mode, then an exception is thrown and Adams Admin or Adams Web will not start.

Solution

The database settings is edited in Configure Adams → Central Config → Require Login

The web.config value can be edited directly in the file or in IIS Manager → Default Web Site → Adams Admin/Web → Authentication

Support Configurations

IIS / web.config

Database

IIS / web.config

Database

Forms

Require Login is True/checked

Forms

Authentication Source is Azure AD

None

Authentication Source is Azure AD

Windows

Require Login is False/un-checked

Authentication Source is not Azure AD

Successful Startup

When Adams Admin starts successfully and a request is made to it, the following message appears in the event viewer.

Source: IIS AspNetCore Module V2

Application 'C:\inetpub\wwwroot\AdamsAdmin\' started successfully.

 

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