This article describes how to enable .NET 3.5.1 and/or ASP.NET functionality, which are required by certain Wasp software components.
Notes
- The components can be enabled in the same install session if desired.
- After enabling the component, if the software or feature that requires it still doesn't work, restart the server and try again. (To restart, hover at the upper right corner of the screen or Press the Windows Logo key and C, then Settings, Power, Restart, choose a reason, Continue.)
.NET 3.5.1:
During the Microsoft .NET Framework 3.5 Setup installation on a Windows 2012 machine you may get the error: "You Must Use The Role Management Tool To Install .NET Framework 3.5." This is because the .NET 3.5.1 framework is included in the operating system and the separate installer from the Wasp software installer is not needed.
Open Server Manager. Often this is the first pinned icon in the taskbar. Or click Start, Server Manager. The Dashboard appears.

On the right under 1 Configure this local server, click 2 Add roles and features.
Next (Role-based or feature-based installation).
Next (Select a server from the server pool. The local server is selected by default.)
On the left, click Features.

Check the first box .NET Framework 3.5.1 Features.
Next, Install. Wait until the installation has completed, then click Close.
Quit Server Manager.
Note: If .NET Framework 3.5 can't be added, go to Administrative Tools > Component Services > right click on My Computer > click on Properties > click on Default Properties tab > change the Default Authentication Level from None to Connect.
ASP.NET:
Open Server Manager. Often this is the first pinned icon in the taskbar. Or click Start, Administrative Tools, Server Manager. The Dashboard appears.

On the right under 1 Configure this local server, click 2 Add roles and features.
Next (Role-based or feature-based installation).
Next (Select a server from the server pool. The local server is selected by default.)
On the left, Server Roles should already be selected.
On the right, in the list, expand Web Server (IIS), Web Server, Application Development.

Check .NET Extensibility 3.5, .NET Extensibility 4.5, ASP.NET 3.5, and ASP.NET 4.5.
Next, Next, Install. Wait until the installation has completed, then click Close.
Quit Server Manager.