To find your machine ID for a specific computer, in Prism, go to the About Prism menu.Ī Prism personal license is for one person only, and may not be installed on shared computers. An additional activation is not consumed when you reinstall the license on a computer that has already been activated previously under the same license. If you are simply wiping your computer and plan on reinstalling, you would not want to deactivate your license from that machine. In addition, Prism activation is linked to the Prism-generated machine ID number that is created for each computer, not your name or email address. You should only use the deactivation option if you are permanently replacing your computer, or if you are certain that you will not need Prism on that computer going forward.

Deactivation will permanently block your license from running on the machine that has been deactivated. Please note that deactivation is permanent (***). Once deactivated, an available activation will be added back to your account so that you can install on a replacement computer. Next to the record for the computer you have replaced, click the Deactivate button. Once logged into your online account page, you can simply scroll to the bottom of the page to see the computer(s) you activated previously. You can deactivate your old computer via your online account page by logging into your account at You can find additional instructions below depending on your license type. Depending on whether you have a personal license or a group license, you have the ability to permanently deactivate an old computer and free up your license to install Prism on a new machine.

Graphpad prism license registry