When you upgraded to Cloudmark DesktopOne Pro, you received an activation code.
Each activation code can be used to activate DesktopOne in Pro Mode on two computers simultaneously. To use DesktopOne on two computers simultaneously, install it on each computer and enter your activation code as described in the steps below.
To run Cloudmark DesktopOne Pro on more than two computers, purchase an additional license for each additional computer. For example, to run Pro Mode on four computers, purchase two additional licenses. To purchase additional licenses, log into My Cloudmark, click Manage under License Information, and then complete the Purchase Additional Licenses information.
Changing the computer name in My Cloudmark does not install Cloudmark DesktopOne on the new computer. To install Cloudmark DesktopOne Pro on another computer, follow the instructions on this page. To uninstall Cloudmark DesktopOne Pro from a computer that you no longer use, see Uninstalling Cloudmark DesktopOne. The computer name in My Cloudmark is to help you remember the computers on which you've installed Cloudmark DesktopOne Pro.

The Enter Activation Code window appears.