While attempting to connect to a Horizon VM using the Horizon native client, a pop-up regarding “Keylogger Blocking” may appear. To resolve this error, use the steps below.

Launch the VMware Horizon Client

On the top right bar, go to Settings

Click on the Security tab and turn Keylogger Blocking On

Close the Horizon Client window

Re-launch the VMware Horizon Client from the desktop

Select the appropriate environment to launch the VM