Product Information Installs on Windows 11 Windows 10Windows 8.1Windows 7Can be installed on 5 Pc'sMicrosoftProfessional Plus 2007 DVD with PermanentLicense key no subscription, asshown.This is a full version cd, any pre-existing Microsoft office software must be uninstalled beforeinstalling2007. Two Microsoft office programs cannot run on the same pc.RETURN POLICYSoftware, CDs, DVDs and video games may be returned for a full refund if in the original, unopened packaging within 30 days of purchase. Opened software,CDs, DVDs and video games may be exchanged for the same item only if defective.Software returned opened used or unsealed,will be charged a 15-50% as we cannot resell the software as new.