How to define .NET trust levels in Plesk

Applicable to:

In Plesk, the following CAS trust levels are available: Minimal, Low, Medium, High, Full.
How to set the required one?

Apply one of the following solutions:

Via Plesk GUI

Log into Plesk.
Go to Tools & Settings > ASP.NET Settings.
Select from the drop-down menu CAS trust level the required level.
Press the OK button to apply the changes.

Note: customers can change this value for each domain in case the Allow to override the CAS trust level for websites option is switched on by the administrator in Tools & Settings > ASP.NET Settings.

Via RDP(server access)

Log into the server via RDP.
Execute the command below:

C:\> "%plesk_bin%"\\aspnetcfg.exe --machine --trust-level=Medium

Note: in the current example CAS trust level was set to Medium
The administrator can change it for each domain through the command-line:

C:\>"%plesk_bin%"\\aspnetcfg.exe --machine --trust-level-allow-override=true

C:\>"%plesk_bin%"\\aspnetcfg.exe --domain-name=domain.tld --trust-level=Minimal

Note: customers can change this value for each domain in case the Allow to override the CAS trust level for websites option is switched on by the administrator in Tools & Settings > ASP.NET Settings.