To change the .NET version on a virtual directory in Windows Server 2012 R2 or Windows Server 2016:
- On the start screen, click Run.
- Type inetmgr and click OK. The Internet Information Systems (IIS) Manager is displayed.
- In the left pane, navigate to Application Pools.
- From the list of application pools, double-click the application pool for the Healthcare Form Manager. The Edit Application Pool dialog box is displayed.
- Under .NET CLR Version, select .NET CLR Version v4.0.30319.
- Click OK.