Reactivation Of Lifetime Expert PDF Licence Key August 28, 2020 18:13 Updated Please quote the license key in question and email address for correspondence to send you replacement key privately. Related articles Purchased Expert PDF 10 Ultimate and have a license key, BUT, having changed my laptop, it will not allow me to re-activate as it says it has been activated already I installed Expert PDF on my laptop is there anyway I can install it on my Desktop as well Validation key not accepted How can I reinstall Expert PDF10 on a new computer? How do you delete certificates?