Genexus shows IIS error


I'm trying to setup Genexus in IIS but after running the web.config setting tool and copying the file I get the following error, any ideas? thanks!

Detailed Error Information:




Error Code

Requested URL

Physical Path

Logon Method
   Not yet determined 

Logon User
   Not yet determined 
asked on Stack Overflow Apr 13, 2016 by txw • edited Apr 14, 2016 by ncardeli

2 Answers


The problem could be that you're using an application pool (ASP.NET version) which is not compatible with NET Framework version used to compile the application. (e.g. the application was compiled using NET Framework 2.0 and Virtual directory uses Framework 4.0)

Please, check what application pool are you using in the IIS (app virtual directory). Using IIS Manager/Your_Virtual_Directory/Advanced Settings/Application pool.

Changing it the application should work.

answered on Stack Overflow Apr 13, 2016 by Guscarr • edited Apr 14, 2016 by Guscarr

I'm not expert, learning GeneXus for last five months. Recently I also faced this kind of problem. I think it version problem of .net.

I managed to overcome this. I think you should turn on "IIS" from "program and feature", then select this check box option shown in attached image [select this check box option shown in attached image][2]

Then you need to confirm that .NET framework 4.5 is reside/already installed in your PC. If the problem still on, then please download .NET 4.5 following this link "". It may require install/ repair. whatever it is after doing restart you PC.

I managed to fix this following this process. I don't know will it work for you or not, but hope it will and help you to fix the problem.

answered on Stack Overflow May 28, 2016 by Samsul Arefeen

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