By default, you can copy and paste from the client system to a remote desktop or published application.
If you use the VMware Blast display protocol or the PCoIP display protocol, a Horizon administrator can configure this feature so that copy and paste operations are allowed only from the client system to a remote desktop or published application, or only from a remote desktop or published application to the client system, or both, or neither.
A Horizon administrator configures the ability to copy and paste by setting agent group policies. Depending on the Horizon server and agent version, a Horizon administrator might also be able to use group policies to restrict clipboard formats during copy and paste operations, or use Smart Policies to control the copy and paste behavior in remote desktops. For more information, see the Configuring Remote Desktop Features in Horizon document.