The operating system is Windows Server 2012.
This dialog box pops when a process starts on the server.
Is it possible to automate the installation of the feature?
Use this command inside Powershell to install .Net Framework 3.5
Install-WindowsFeature Net-Framework-Core -source \\network\share\sxs
or use the Server Manager cmdlets. It should be possible to execute those via Terraformremote-exec.