ITAM install fail

Document ID : KB000100683
Last Modified Date : 13/07/2018
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Question:
I installed IT Asset Manager 14.1 successfully. I am trying to connect to the application and getting an error:
500 - Internal server error. 
There is a problem with the resource you are looking for, and it cannot be displayed.
Answer:
Verify that asp.net is installed.
Open Server Manager. Go to Add Roles and Features.
Expand Web Server - Web Server - Application Development.
Verify ASP.NET versions are installed. If not, check them and continue to install.