The following warning appears during transfer from one Plesk to another:
The managed runtime version 2.0 is not available on the destination server
ASP.NET 2.0 is not installed on destination server.
Since .NET 2.0 and 3.0 are included into .NET 3.5 package, you need to install .NET 3.5 on the destination server.
For Windows Server 2008
Download from Microsfot site:
Install package manually.
For Windows Server 2008 R2 and higher
Use Windows Server Manager to install .NET:
Server Manager > Add Roles and Features > Server Features > Application Development > .NET Framework 3.5