IIS Add Managed Module error after moving from Windows Server 2016 to Windows Server 2022

Question

I updated a VM running Windows Server 2016 to Windows Server 2022.

On Windows Server 2016 I was running ASP.NET 4.7.

After upgrading I get the error below if there is a C-Sharp program (I tested with a Hello, World! script) and I click the Add Managed Module option in IIS.

There was an error while performing this operation.  
  
Details:  
  
Cannot execute a program. The command being executed was 'C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe' /noconfig /fullpaths  
@"C:Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\<number>\<number>.cmdline".  

The C-Sharp Compile (csc.exe) is present in the directory.

Any idea how I can diagnose the issue and solve it please?

Answer 1

Hi @Bruce (SqlWork.com) ,

I upgraded from Windows server 2016 to 2022.

Is there a way I can get the behaviour I had. I would like to avoid installing visual studio.

The video link I shared earlier in this thread shows that now when I place any C# code in the bin directory, IIS functionality is impacted.

I would like to completely disable the rosyln compiler on this server (or website).

Can this be done?

Thanks