During the launch of the InstallShield 2010 (and later) product, a dialog box is displayed and prompts for the reactivation of the product serial number to verify the license key. Following the on-screen prompts for reactivation fails with an error informing the user with the following error message or similar:
"Error 20653: The number of activations allowed for this account has been exceeded."
Be aware that the word "Re-activation" in the dialog box is important to this article, for problems regarding activation please see the other links listed in the Additional Information section below.