SCCM 2012 R2 offers many advantages, including the ability to provide users with an application portal.

Application portal is based on two roles in SCCM :

• Application Catalog website point

• Application Catalog web service point

If one of the prerequisites is not correctly installed, the installation will fail with the inability to access the list of applications. We can see in the print screen below that the user accesses the portal but the list of applications is not present.

By looking at the logs on the SCCM server we can see that the installation of one of the roles is in error.

After verification, it turns out that some components at the ASP.NET level were not correctly checked in the Server Manager console.
To solve this problem, it is therefore necessary to first make sure that all the prerequisites for IIS are correctly installed :

• .NET Framework 3.5

• HTTP Activation and automatically selected options

• .NET Framework 4.5

Common HTTP Features:

• Default Document

• IIS 6 Management Compatibility:

• IIS 6 Metabase Compatibility

Application Development:

• ASP.NET 3.5 and automatically enabled optionst

• .NET Extensibility 3.5

Then reinstall the two role services (Application Catalog website point and Application Catalog web service point).