To ensure .NET Framework is installed properly on Windows Server 2008 R2:
- Add the Web Server (IIS) Role.
-
Add the following Role Services:
-
Static Content
-
Default Document
-
ASP.NET
-
.NET Extensibility
-
ISAPI Extensions
-
ISAPI Filters
-
Windows Authentication (optional)
-
Request Filtering
-
IIS Management Console
-
- Run the .NET Framework installer.